347:
875:
613:
3426:
1056:
325:
694:
624:
314:
336:
49:
61:
892:
701:
The following table shows how common various erection angles are for a standing male. In the table, zero degrees (0°) is pointing straight up against the abdomen, 90° is horizontal and pointing straight forward, and 180° is pointing straight down to the feet. An upward pointing angle is most common
807:
reasons, most of which are amenable to treatment. Common physiological reasons include diabetes, kidney disease, chronic alcoholism, multiple sclerosis, atherosclerosis, vascular disease, including arterial insufficiency and venogenic erectile dysfunction, and neurologic disease which collectively
677:
Although many erect penises point upwards, it is common and normal for the erect penis to point nearly vertically upwards or horizontally straight forward or even nearly vertically downwards, all depending on the tension of the suspensory ligament that holds it in position. An erect penis can also
508:
and cavernosal sinosoids, forcing blood out of the erectile tissue through erection-related veins which include one deep dorsal vein, a pair of cavernosal veins, and two pairs of para-arterial veins between Buck's fascia and the tunica albuginea. Erection rigidity is mechanically controlled by
657:
The length of the flaccid penis is not indicative of the length of the penis when it becomes erect, with some smaller flaccid penises growing much longer, and some larger flaccid penises growing comparatively less. Generally, the size of an erect penis is fixed throughout
940:. After the male achieves penetration, he will often hold the female tighter and thrust faster, and it is during this time that the male's penis expands, unlike human sexual intercourse, where the male penis commonly becomes erect before entering the female.
642:
if they happen in public or when undesired. Such erections can occur at any time of day, and if clothed may cause a bulge which (if required) can be disguised or hidden by wearing close-fitting underwear, a long shirt, or baggier clothes.
1021:
Clinically, erection is often known as "penile erection", and the state of being erect, and process of erection, are described as "tumescence" or "penile tumescence". The term for the subsiding or cessation of an erection is
528:
can initiate erection in the absence of direct mechanical stimulation (in response to visual, auditory, olfactory, imagined, or tactile stimuli) acting through erectile centers in the lumbar and sacral regions of the
954:, there is little enlargement after erection. The penis is quite rigid when non-erect, and becomes even more rigid during erection. Protrusion is not affected much by erection, but more by relaxation of the
854:
is a painful condition in which the penis does not return to its flaccid state, despite the absence of both physical and psychological stimulation. Priapism lasting over four hours is a medical emergency.
509:
reduction blood flow through theses veins, and thereby building up the pressure of the corpus cavernosum and corpus spongiosum, an integral instructure, the distal ligament, buttresses the glans penis.
702:
and the average erection angle is 74.3 degrees. The penile curvature was measured same time. 63% men have straight penis. 22.2% men have upwards curvature and 14.8% men have downwards curvature.
500:
muscles also compress the veins of the corpora cavernosa, limiting the venous drainage of blood. Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation from the
972:
is housed within the prepuce, 50 centimetres (20 in) long and 2.5 to 6 centimetres (0.98 to 2.36 in) in diameter with the distal end 15 to 20 centimetres (5.9 to 7.9 in). The
1642:
Sadeghipour H, Ghasemi M, Ebrahimi F, Dehpour AR (2007). "Effect of lithium on endothelium-dependent and neurogenic relaxation of rat corpus cavernosum: role of nitric oxide pathway".
1189:
191:
becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with
678:
take on a number of different shapes, ranging from a straight tube to a tube with a curvature up or down or to the left or right. An increase in penile curvature can be caused by
1040:
terms include 'stiffy', 'hard-on', 'boner' and 'woody'. There are several slang words, euphemisms and synonyms for an erection in
English and in other languages (see also:
976:
contracts to retract the penis into the sheath and relaxes to allow the penis to extend from the sheath. When erect, the penis doubles in length and thickness and the
638:
Spontaneous erections, also known as involuntary, random or unwanted erections, are commonplace and a normal part of male physiology. Socially, such erections can be
3853:
1729:"Effect of chronic lithium administration on endothelium-dependent relaxation of rat corpus cavernosum: the role of nitric oxide and cyclooxygenase pathways"
1538:
Li CY, Kayes O, Kell PD, Christopher N, Minhas S, Ralph DJ (2006). "Penile suspensory ligament division for penile augmentation: indications and results".
1959:
1803:
866:
is a rare, chronic condition characterized by a flaccid penis that remains in a firm, semi-rigid or semi-erect state in the absence of sexual arousal.
533:. The cortex may suppress erection, even in the presence of mechanical stimulation, as may other psychological, emotional, and environmental factors.
1573:
265:
of the corpora cavernosa restricting the egress and circulation of this blood. Erection subsides when parasympathetic activity reduces to baseline.
280:(NPT), also known as "morning wood". Absence of nocturnal erection is commonly used to distinguish between physical and psychological causes of
4224:
147:
93:
2751:
1186:
4219:
3846:
908:
516:
or cessation of stimulation, erection usually subsides, but the time taken may vary depending on the length and thickness of the penis.
4209:
1785:
576:
and is therefore considered taboo or inappropriate for a public setting in many societies. This taboo is lesser than that surrounding
3780:
3463:
994:. Most stallions achieve erection within 2 minutes of contact with an estrus mare, and mount the estrus mare 5–10 seconds afterward.
901:
788:
characterized by the inability to develop and/or maintain an erection. The study of erectile dysfunction within medicine is known as
3342:
469:
227:
346:
843:
and inability to discuss the matter. Around one in ten men experience recurring impotence problems at some point in their lives.
4098:
3839:
1906:
203:, although erections can also be spontaneous. The shape, angle, and direction of an erection vary considerably between humans.
3396:
2261:
2125:
2091:
2057:
2030:
1998:
1882:
1848:
1494:
1467:
1243:
1137:
1013:
can reach about the same length as the animal himself when fully erect, but more commonly is about half the bird's length.
3594:
669:
is 13.12 cm (5.17 inches), while the average circumference of an erect human penis is 11.66 cm (4.59 inches).
840:
1174:
3327:
2526:
1772:
1711:
1681:
1626:
1346:
1341:
Harris, Robie H. (et al.), It's
Perfectly Normal: Changing Bodies, Growing Up, Sex And Sexual Health. Boston, 1994. (
1326:
1293:
1263:
1218:
4108:
944:
3379:
2899:
2543:
2426:
1963:
276:, and is therefore not entirely under conscious control. Erections during sleep or upon waking up are known as
3456:
3198:
2861:
2590:
2301:
1486:
Making Sense of Sex: A Forthright Guide to
Puberty, Sex and Relationships for People with Asperger's Syndrome
1807:
1041:
291:
The state of a penis which is partly, but not fully, erect is sometimes known as semi-erection (clinically:
4083:
3364:
3034:
2889:
2723:
2613:
2115:
2708:
2406:
548:
547:
The penis may become erect during sleep or be erect on waking up. Such an erection is medically known as
542:
417:
respectively. This may also become slightly engorged with blood, but less so than the corpora cavernosa.
277:
4290:
3693:
3143:
2695:
2310:
501:
420:
In some cases, the scrotum becomes tightened during an erection, and in most uncircumcised males, the
4277:
4068:
2869:
2575:
2553:
682:. This may cause physical and psychological effects for the affected individual, which could include
268:
As an autonomic nervous system response, an erection may result from a variety of stimuli, including
142:
88:
24:
4372:
3012:
3007:
874:
4357:
4285:
3449:
3374:
2947:
2894:
441:
373:, erections occur much more frequently. An erection occurs when two tubular structures, called the
355:
Side views and comparison of the stages of both uncircumcised and circumcised human penis erection.
215:
130:
76:
595:
to measure sexual orientation. An unusual aversion to the erect penis is sometimes referred to as
4362:
3714:
3386:
3359:
3213:
2197:
1089:
990:
932:
is not erect, and only able to penetrate the female because it includes a narrow bone called the
493:
374:
366:
254:
242:
1258:
Drake, Richard, Wayne Vogl and Adam
Mitchell, Grey's Anatomy for Students. Philadelphia, 2004. (
4118:
3755:
3688:
3569:
3430:
3315:
3311:
3301:
3017:
2851:
2841:
2045:
1360:
1061:
973:
955:
497:
445:
258:
154:
100:
2149:
2047:
1457:
1127:
612:
4331:
4326:
4167:
3996:
3805:
3800:
3785:
3658:
3369:
2942:
2927:
2909:
2811:
2738:
2464:
2459:
1484:
863:
679:
665:
Though the size of a penis varies considerably between males, the average length of an erect
588:
424:
automatically and gradually retracts throughout the various stages of erection, exposing the
2251:
584:. Erectile dysfunction is often considered a flaw, eliciting shame in individuals affected.
4382:
4321:
3760:
3651:
3337:
3153:
2952:
2643:
2516:
2214:
809:
779:
683:
397:
is a single tubular structure located just below the corpora cavernosa, which contains the
281:
3831:
1517:
324:
8:
4171:
4088:
4059:
3485:
3391:
3242:
3225:
3180:
3044:
3002:
2957:
2683:
2454:
2416:
2218:
2196:
McCracken, Kevin G.; Wilson, Robert E.; McCracken, Pamela J.; Johnson, Kevin P. (2001).
4367:
4257:
4047:
4009:
3866:
3820:
3765:
3734:
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3639:
3262:
3237:
3133:
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3039:
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2879:
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2511:
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2411:
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1931:
1703:
1383:
1318:
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1094:
785:
386:
269:
207:
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account for about 70% of ED cases. Some drugs used to treat other conditions, such as
693:
4113:
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4027:
3810:
3719:
3668:
3557:
3332:
3257:
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2713:
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2121:
2087:
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1994:
1918:
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1302:
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1214:
1133:
1069:
937:
572:
Though an erection can have many causes, it is most commonly seen as an indicator of
394:
246:
196:
31:
20:
1437:
After
Prostate Cancer: A What-Comes-Next Guide to a Safe and Informed recovery: p.48
1023:
623:
3892:
3815:
3775:
3574:
3425:
3352:
3116:
2962:
2917:
2821:
2756:
2557:
2538:
2222:
2205:
2170:
1923:
1740:
1699:
1651:
1621:
Milsten, Richard (et al.), The Sexual Male. Problems And
Solutions. London, 2000. (
1596:
1547:
1401:
1375:
1314:
1281:
1055:
1037:
969:
652:
465:
1687:
295:); a penis which is not erect is typically referred to as being flaccid, or soft.
3920:
3874:
3790:
3624:
3599:
3506:
3472:
2937:
2761:
2678:
2653:
2600:
2580:
2570:
2533:
2314:
2081:
1987:
1872:
1838:
1551:
1193:
1104:
951:
525:
437:
211:
135:
81:
1676:
Williams, Warwick, It's Up To You: Overcoming
Erection Problems. London, 1989. (
4377:
4004:
3925:
3739:
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3516:
3441:
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2401:
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1655:
1079:
962:
573:
390:
273:
192:
19:
This article is about penile erection. For the similar arousal in females, see
1600:
456:
supplying the erectile tissue; upon stimulation, these nerve branches release
4351:
4267:
3962:
3912:
3729:
3683:
3604:
3562:
3537:
3511:
3091:
2982:
2836:
2565:
2500:
2491:
2439:
2431:
2391:
2381:
2279:
1029:
824:
804:
800:
639:
505:
473:
457:
449:
234:
206:
Physiologically, an erection is required for a male to effect penetration or
16:
Physiological phenomenon involving the hardening and enlargement of the penis
2046:
Juan C. Samper, Ph.D.; Jonathan F. Pycock, Ph.D.; Angus O. McKinnon (2007).
1425:
1269:
4140:
4123:
4054:
4014:
3930:
3902:
3887:
3552:
3530:
3496:
3291:
3230:
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3190:
3106:
3101:
3029:
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1754:
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1559:
1002:
929:
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481:
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378:
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238:
223:
219:
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313:
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3795:
3634:
3525:
3320:
3252:
3208:
3173:
3163:
3064:
2801:
2496:
2474:
2374:
1960:"The Stallion: Breeding Soundness Examination & Reproductive Anatomy"
1084:
977:
828:
666:
530:
513:
425:
414:
65:
Three columns of erectile tissue make up most of the volume of the penis.
831:, can have devastating psychological consequences including feelings of
686:
or pain during an erection. Treatments include oral medication (such as
436:
In the presence of mechanical stimulation, erection is initiated by the
335:
4336:
4306:
4199:
4160:
4155:
4135:
3862:
3770:
3542:
3501:
3286:
3269:
3081:
2786:
2703:
2322:
2182:
1935:
1870:
1379:
1005:, being an erectile expansion of the cloacal wall and being erected by
998:
985:
813:
687:
577:
382:
184:
160:
106:
48:
4262:
4252:
4229:
4176:
4073:
4063:
3974:
3947:
3935:
3897:
3709:
3629:
3584:
3408:
3158:
3148:
3096:
3074:
3059:
2997:
2992:
2791:
2771:
2633:
2469:
2396:
2227:
1074:
1010:
789:
410:
285:
2174:
1927:
1727:
Sadeghipour H, Ghasemi M, Nobakht M, Ebrahimi F, Dehpour AR (2007).
943:
An elephant's penis is S-shaped when fully erect and has a Y-shaped
4194:
4150:
4145:
3979:
3967:
3952:
3882:
3663:
3619:
3589:
3579:
3547:
3476:
3279:
3247:
3168:
3126:
3069:
3049:
2922:
2776:
2766:
2506:
2486:
2350:
1767:
Tanagho, Emil A. (et al.), Smith's
General Urology. London, 2000. (
1574:"Is Your Penis Normal? There's a Chart for That - RealClearScience"
1099:
879:
851:
820:
819:
Erectile dysfunction, tied closely as it is to cultural notions of
784:
Erectile dysfunction (also known as ED or "(male) impotence") is a
690:) or surgery, which is most often performed only as a last resort.
453:
428:, though some individuals have to manually retract their foreskin.
421:
984:. Erection and protrusion take place gradually, by the increasing
591:, which measures erections, has been used by some governments and
60:
4234:
4130:
3403:
3274:
3203:
3086:
3022:
2977:
2967:
2781:
2743:
2479:
2327:
2161:
1726:
1641:
1587:
Sparling J (1997). "Penile erections: shape, angle, and length".
1036:, erection is known by many informal terms. Commonly encountered
933:
793:
659:
398:
370:
4244:
4034:
3984:
3957:
3138:
2623:
2444:
2365:
2355:
2195:
581:
230:
200:
3940:
3347:
1871:
James R. Gillespie; Frank Bennie
Flanders (28 January 2009).
1033:
1006:
836:
832:
592:
406:
402:
250:
188:
3861:
3614:
2987:
2932:
2648:
2198:"Sexual selection: Are ducks impressed by drakes' display?"
1446:
Listen To Your
Hormones, Abraham Harvey Kryger - 2004. p.32
1129:
What's Happening to My Body? Book for Boys: Revised Edition
504:
of the autonomic nervous system causes constriction of the
262:
1276:
Hsu, Geng-Long; Liu, Shih-Ping (2018). "Penis Structure".
4186:
911:
any relevant information into other sections or articles.
377:, that run the length of the penis, become engorged with
369:, and is common for children and infants. After reaching
1187:
APDVS > 31. Anatomy and Physiology of Normal Erection
1459:
Sexuality Now: Embracing Diversity: Embracing Diversity
2083:
Equine Breeding Management and Artificial Insemination
1806:. Arbl.cvmbs.colostate.edu. 2002-09-14. Archived from
1537:
1162:
Worlds Apart: Recent Chinese Writing and Its Audiences
1864:
1840:
Functional Anatomy and Physiology of Domestic Animals
965:'s penis reaches to between his forelegs when erect.
1954:
1952:
1051:
519:
2249:
2150:"The 20-cm Spiny Penis of the Argentine Lake Duck (
1986:
1984:
1238:. Lippincott Williams & Wilkins. p. 265.
602:
1962:. University of Wisconsin-Madison. Archived from
1949:
1455:
4349:
3471:
1904:
1836:
1694:Hsu, Geng-Long (2018). "Erection Abnormality".
1637:
1635:
950:Given the small amount of erectile tissue in a
2309:
2079:
2039:
1402:"How to stop an unwanted erection: 7 remedies"
1233:
3847:
3457:
2295:
2243:
2113:
1482:
1125:
1121:
1119:
1632:
662:life. Its size may be increased by surgery.
1898:
1489:. Jessica Kingsley Publishers. p. 62.
1476:
1358:
697:Various erection angle and shape of penises
448:. Parasympathetic branches extend from the
365:as well as for the harvesting of sperm for
3854:
3840:
3464:
3450:
2302:
2288:
2073:
1586:
1361:"Voluntary enhancement of penile erection"
1116:
958:and straightening of the sigmoid flexure.
3781:Sexual and reproductive health and rights
2226:
2147:
2052:. Elsevier Health Sciences. p. 176.
1978:
1874:Modern Livestock & Poultry Production
1830:
1744:
1236:Essential Clinical Anatomy, Third Edition
1159:
484:agent. The arteries dilate, filling the
245:of the penis (and to a lesser extent the
2107:
1359:Rubin, H. B.; Henson, Donald E. (1975).
1204:
1202:
873:
858:
692:
2256:. HarperCollins Publishers. p. 6.
2250:Gabrielle Morrissey (27 January 2005).
1985:James Warren Evans (15 February 1990).
988:of the erectile vascular tissue in the
773:
562:
472:arteries. Nitric oxide diffuses to the
53:Erection of an uncircumcised male human
4350:
2049:Current Therapy in Equine Reproduction
2020:
2014:
1510:
1309:Hsu, Geng-Long; Lu, Hsiu-Chen (2018).
1275:
1208:
799:Erectile dysfunction may occur due to
460:, which in turn causes the release of
381:. This may result from any of various
4225:Hypothalamic–pituitary–prolactin axis
3835:
3445:
2283:
1456:Janell L. Carroll (29 January 2009).
1308:
1199:
768:
536:
1698:. Academic Press. pp. 382–390.
1589:Journal of Sex & Marital Therapy
1313:. Academic Press. pp. 367–375.
1280:. Academic Press. pp. 357–366.
1175:wiley.com > Viagra function image
885:
431:
4220:Hypothalamic–pituitary–gonadal axis
3595:Friends with benefits relationships
1905:Köhncke, M.; Leonhardt, K. (1986).
1693:
1518:"Penis Size FAQ & Bibliography"
1368:Bulletin of the Psychonomic Society
13:
1786:"Erectile dysfunction (impotence)"
1704:10.1016/B978-0-12-801238-3.64374-X
1319:10.1016/B978-0-12-801238-3.64603-2
1286:10.1016/B978-0-12-801238-3.64602-0
1213:. Benjamin-Cummings. p. 895.
816:, may cause erectile dysfunction.
14:
4394:
1837:William O. Reece (4 March 2009).
1462:. Cengage Learning. p. 149.
902:list of miscellaneous information
839:or inadequacy. There is a strong
632:Erection visible beneath clothing
580:but higher than that surrounding
520:Voluntary and involuntary control
3424:
2114:Frank B. Gill (6 October 2006).
1746:10.1111/j.1464-410X.2006.06530.x
1234:Moore, Keith; Anne Agur (2007).
1132:. Newmarket Press. p. 119.
1054:
928:At the time of penetration, the
890:
869:
622:
611:
345:
334:
323:
312:
59:
47:
3380:LGBT-affirming religious groups
2253:Urge: Hot Secrets For Great Sex
2189:
2141:
1821:
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1720:
1670:
1615:
1580:
1566:
1531:
1449:
1440:
1431:
1419:
1394:
1352:
1335:
1009:, not blood. The penis of the
1001:is different in structure from
603:Spontaneous or random erections
2544:Sexually transmitted infection
2025:. Discovery Publishing House.
1252:
1227:
1180:
1168:
1153:
1016:
706:Occurrence of erection angles
1:
2591:Women who have sex with women
1483:Sarah Attwood (15 May 2008).
1126:Lynda Madaras (8 June 2007).
1110:
361:An erection is necessary for
298:
2724:History of erotic depictions
2614:Criminal transmission of HIV
2148:McCracken, Kevin G. (2000).
2120:. Macmillan. pp. 414–.
2086:. Elsevier Health Sciences.
1804:"Semen Collection from Dogs"
1696:Encyclopedia of Reproduction
1552:10.1016/j.eururo.2006.01.020
1278:Encyclopedia of Reproduction
672:
444:with minimal input from the
7:
2709:Counterculture of the 1960s
2023:Sexual Behaviour In Animals
1047:
846:
549:nocturnal penile tumescence
543:Nocturnal penile tumescence
278:nocturnal penile tumescence
237:of the penis. The arteries
10:
4399:
4210:Reproductive endocrinology
3431:Human sexuality portal
1656:10.1016/j.niox.2006.05.004
1428:retrieved 28 February 2012
1426:Morning Erections: Sizemed
1196:Retrieved on Mars 11, 2010
1177:Retrieved on Mars 11, 2010
1160:Goldblatt, Howard (1990).
777:
650:
540:
29:
18:
4299:
4278:Human reproductive system
4276:
4243:
4208:
4185:
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3995:
3911:
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3748:
3702:
3483:
3419:
3300:
3189:
2908:
2860:
2737:
2694:
2599:
2576:Men who have sex with men
2552:
2425:
2321:
1843:. John Wiley & Sons.
1601:10.1080/00926239708403924
567:
153:
141:
129:
124:
119:
99:
87:
75:
70:
58:
46:
41:
25:Erection (disambiguation)
1520:. Kinsey Institute. 2009
1311:Penis Structure-Erection
1211:Anatomy & physiology
899:This section contains a
478:trabecular smooth muscle
476:of the arteries (called
442:autonomic nervous system
218:, causing the levels of
216:autonomic nervous system
210:and is triggered by the
187:phenomenon in which the
30:Not to be confused with
3715:Physical attractiveness
2080:Juan C. Samper (2009).
1209:Marieb, Elaine (2013).
1090:Issues in social nudity
991:corpus cavernosum penis
646:
385:stimuli, also known as
367:artificial insemination
4300:Diseases and disorders
4109:Sexual differentiation
3756:Human female sexuality
3689:Split attraction model
3570:Committed relationship
2852:Split attraction model
2842:Sexual objectification
2752:Anarchism and love/sex
1062:Human sexuality portal
956:retractor penis muscle
883:
714:Percent of population
698:
446:central nervous system
155:Anatomical terminology
120:Erection blood vessels
101:Anatomical terminology
23:. For other uses, see
4332:Premature ejaculation
4327:Hard flaccid syndrome
3997:Human sexual activity
3806:Sex-positive movement
3801:Sex-positive feminism
3786:Sex Addicts Anonymous
3659:Queer heterosexuality
2812:Sex-positive movement
2465:Reproductive medicine
2460:Obesity and sexuality
2407:Sexual response cycle
877:
864:Hard flaccid syndrome
859:Hard flaccid syndrome
792:, a sub-field within
696:
589:penile plethysmograph
261:muscles compress the
253:; simultaneously the
4322:Erectile dysfunction
3761:Human male sexuality
3652:Romantic orientation
3338:Buddhist monasticism
3328:Christian demonology
3154:Urethral intercourse
2953:Erotic sexual denial
2644:Cybersex trafficking
2517:Erectile dysfunction
1877:. Cengage Learning.
1042:The WikiSaurus entry
936:, a feature of most
780:Erectile dysfunction
774:Erectile dysfunction
684:erectile dysfunction
563:Socio-sexual aspects
502:sympathetic division
363:natural insemination
282:erectile dysfunction
4101:reproductive system
4089:Vaginal lubrication
3867:sexual reproduction
3538:Casual relationship
3486:Sexual relationship
3392:Sacred prostitution
3181:Wet T-shirt contest
3045:Non-penetrative sex
3003:Mammary intercourse
2684:Revenge pornography
2455:Masters and Johnson
2417:Vaginal lubrication
2219:2001Natur.413..128M
2021:Sarkar, A. (2003).
882:with an erect penis
707:
4099:Development of the
4010:Sexual intercourse
3821:Stanley v. Georgia
3766:Right to sexuality
3735:Sexual frustration
3674:Sexual orientation
3238:Red-light district
3134:Sexual penetration
3122:Sexual intercourse
3040:Nipple stimulation
2719:Golden Age of Porn
2619:Child sexual abuse
2586:Sexual orientation
2512:Sexual dysfunction
2450:Male contraceptive
2412:Sexual stimulation
2361:Nocturnal emission
1909:Cryptoprocta ferox
1406:Medical News Today
1380:10.3758/BF03333178
1192:2010-07-14 at the
1095:Nipple stimulation
980:increases by 3 to
968:When not erect, a
884:
841:culture of silence
786:sexual dysfunction
769:Medical conditions
705:
699:
680:Peyronie's disease
537:Nocturnal erection
387:sexual stimulation
293:partial tumescence
270:sexual stimulation
208:sexual intercourse
4345:
4344:
4114:Sexual dimorphism
4079:Postpartum period
3829:
3828:
3811:Sexual revolution
3720:Sexual attraction
3669:Sexual abstinence
3558:Celibacy syndrome
3439:
3438:
3348:Hindu monasticism
3333:Clerical celibacy
3199:Adult video games
2910:Sexual activities
2827:Sexual attraction
2817:Sexual abstinence
2729:Sexual revolution
2714:Feminist sex wars
2669:Sexual misconduct
2664:Sexual harassment
2629:Indecent exposure
2336:Clitoral erection
2263:978-0-7304-4527-2
2127:978-0-7167-4983-7
2093:978-1-4160-5234-0
2059:978-0-7216-0252-3
2032:978-81-7141-746-9
2000:978-0-7167-1811-6
1993:. W. H. Freeman.
1919:Mammalian Species
1884:978-1-4283-1808-3
1850:978-0-8138-1451-3
1496:978-1-84642-797-8
1469:978-0-495-60274-3
1245:978-0-7817-6274-8
1139:978-1-55704-769-4
1070:Clitoral erection
938:placental mammals
926:
925:
766:
765:
492:with blood. The
490:corpora cavernosa
486:corpus spongiosum
466:endothelial cells
432:Autonomic control
395:corpus spongiosum
375:corpora cavernosa
247:corpus spongiosum
243:corpora cavernosa
226:) to rise in the
197:sexual attraction
181:penile tumescence
169:
168:
164:
115:
114:
110:
32:penis enlargement
21:clitoral erection
4390:
4084:Mechanics of sex
3893:Follicular phase
3863:Human physiology
3856:
3849:
3842:
3833:
3832:
3816:Sexual surrogate
3776:Sexual addiction
3575:Conventional sex
3466:
3459:
3452:
3443:
3442:
3429:
3428:
3353:Jain monasticism
3117:Sexual fetishism
3035:Mechanics of sex
2918:Conventional sex
2822:Sexual addiction
2757:Extramarital sex
2539:Sexual surrogate
2375:male ejaculation
2304:
2297:
2290:
2281:
2280:
2275:
2274:
2272:
2270:
2247:
2241:
2240:
2230:
2228:10.1038/35093160
2202:
2193:
2187:
2186:
2158:
2145:
2139:
2138:
2136:
2134:
2111:
2105:
2104:
2102:
2100:
2077:
2071:
2070:
2068:
2066:
2043:
2037:
2036:
2018:
2012:
2011:
2009:
2007:
1992:
1982:
1976:
1975:
1973:
1971:
1956:
1947:
1946:
1944:
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1902:
1896:
1895:
1893:
1891:
1868:
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1834:
1828:
1827:Shoshani, p. 80.
1825:
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1759:
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1584:
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1197:
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1166:
1165:
1157:
1151:
1150:
1148:
1146:
1123:
1064:
1059:
1058:
983:
974:retractor muscle
921:
918:
912:
894:
893:
886:
708:
704:
653:Human penis size
626:
615:
494:ischiocavernosus
440:division of the
401:, through which
349:
338:
327:
316:
255:ischiocavernosus
214:division of the
161:edit on Wikidata
158:
148:E1.0.0.0.0.0.8
117:
116:
107:edit on Wikidata
104:
94:E1.0.0.0.0.0.8
63:
51:
39:
38:
4398:
4397:
4393:
4392:
4391:
4389:
4388:
4387:
4358:Penile erection
4348:
4347:
4346:
4341:
4295:
4272:
4239:
4212:and infertility
4211:
4204:
4181:
4100:
4093:
3991:
3921:Spermatogenesis
3907:
3875:Menstrual cycle
3869:
3860:
3830:
3825:
3791:Sexual jealousy
3744:
3703:Sexual dynamics
3698:
3625:One-night stand
3600:Heterosexuality
3507:Gray asexuality
3490:
3488:
3479:
3473:Human sexuality
3470:
3440:
3435:
3423:
3415:
3343:Catholic Church
3303:
3296:
3185:
2904:
2856:
2762:Family planning
2741:
2733:
2690:
2679:Sexual violence
2654:Sex trafficking
2595:
2581:Sexual identity
2571:Gender identity
2548:
2534:Sexual medicine
2430:
2421:
2387:Penile erection
2341:Erogenous zones
2325:
2317:
2315:human sexuality
2308:
2278:
2268:
2266:
2264:
2248:
2244:
2200:
2194:
2190:
2175:10.2307/4089612
2156:
2146:
2142:
2132:
2130:
2128:
2112:
2108:
2098:
2096:
2094:
2078:
2074:
2064:
2062:
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2044:
2040:
2033:
2019:
2015:
2005:
2003:
2001:
1983:
1979:
1969:
1967:
1958:
1957:
1950:
1940:
1938:
1928:10.2307/3503919
1913:
1903:
1899:
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1200:
1194:Wayback Machine
1185:
1181:
1173:
1169:
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1154:
1144:
1142:
1140:
1124:
1117:
1113:
1105:Sexual function
1060:
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628:
627:
618:
617:
616:
605:
570:
565:
545:
539:
526:cerebral cortex
522:
506:penile arteries
498:bulbospongiosus
480:), acting as a
438:parasympathetic
434:
359:
358:
357:
356:
352:
351:
350:
341:
340:
339:
330:
329:
328:
319:
318:
317:
308:
307:
306:Erection stages
301:
259:bulbospongiosus
249:) to fill with
212:parasympathetic
177:penile erection
165:
111:
66:
54:
35:
28:
17:
12:
11:
5:
4396:
4386:
4385:
4380:
4375:
4370:
4365:
4363:Sexual arousal
4360:
4343:
4342:
4340:
4339:
4334:
4329:
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4127:
4126:
4121:
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4105:
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4092:
4091:
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4032:
4031:
4030:
4025:
4017:
4012:
4007:
4005:Sexual arousal
4001:
3999:
3993:
3992:
3990:
3989:
3988:
3987:
3982:
3972:
3971:
3970:
3965:
3960:
3955:
3945:
3944:
3943:
3938:
3933:
3928:
3926:spermatogonium
3917:
3915:
3909:
3908:
3906:
3905:
3900:
3895:
3890:
3885:
3879:
3877:
3871:
3870:
3859:
3858:
3851:
3844:
3836:
3827:
3826:
3824:
3823:
3818:
3813:
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3803:
3798:
3793:
3788:
3783:
3778:
3773:
3768:
3763:
3758:
3752:
3750:
3746:
3745:
3743:
3742:
3740:Sociosexuality
3737:
3732:
3727:
3725:Sexual capital
3722:
3717:
3712:
3706:
3704:
3700:
3699:
3697:
3696:
3691:
3686:
3681:
3679:Sexual partner
3676:
3671:
3666:
3661:
3656:
3655:
3654:
3644:
3643:
3642:
3632:
3627:
3622:
3617:
3612:
3610:Hypersexuality
3607:
3602:
3597:
3592:
3587:
3582:
3577:
3572:
3567:
3566:
3565:
3560:
3555:
3545:
3540:
3535:
3534:
3533:
3523:
3522:
3521:
3520:
3519:
3517:Fictosexuality
3514:
3499:
3493:
3491:
3484:
3481:
3480:
3469:
3468:
3461:
3454:
3446:
3437:
3436:
3434:
3433:
3420:
3417:
3416:
3414:
3413:
3412:
3411:
3401:
3400:
3399:
3397:Ancient Greece
3389:
3384:
3383:
3382:
3372:
3367:
3362:
3357:
3356:
3355:
3350:
3345:
3340:
3330:
3325:
3324:
3323:
3308:
3306:
3298:
3297:
3295:
3294:
3289:
3284:
3283:
3282:
3272:
3267:
3266:
3265:
3260:
3250:
3245:
3240:
3235:
3234:
3233:
3228:
3218:
3217:
3216:
3206:
3201:
3195:
3193:
3187:
3186:
3184:
3183:
3178:
3177:
3176:
3171:
3161:
3156:
3151:
3146:
3141:
3136:
3131:
3130:
3129:
3119:
3114:
3112:Sexual fantasy
3109:
3104:
3099:
3094:
3089:
3084:
3079:
3078:
3077:
3072:
3067:
3062:
3057:
3047:
3042:
3037:
3032:
3027:
3026:
3025:
3020:
3015:
3013:Anal fingering
3005:
3000:
2995:
2990:
2985:
2980:
2975:
2973:Foot fetishism
2970:
2965:
2960:
2955:
2950:
2945:
2940:
2935:
2930:
2925:
2920:
2914:
2912:
2906:
2905:
2903:
2902:
2897:
2892:
2887:
2882:
2877:
2872:
2866:
2864:
2858:
2857:
2855:
2854:
2849:
2844:
2839:
2834:
2832:Sexual capital
2829:
2824:
2819:
2814:
2809:
2804:
2799:
2797:Premarital sex
2794:
2789:
2784:
2779:
2774:
2769:
2764:
2759:
2754:
2748:
2746:
2735:
2734:
2732:
2731:
2726:
2721:
2716:
2711:
2706:
2700:
2698:
2692:
2691:
2689:
2688:
2687:
2686:
2681:
2676:
2674:Sexual slavery
2671:
2666:
2661:
2659:Sexual assault
2656:
2651:
2646:
2636:
2631:
2626:
2621:
2616:
2611:
2609:Age of consent
2605:
2603:
2597:
2596:
2594:
2593:
2588:
2583:
2578:
2573:
2568:
2562:
2560:
2550:
2549:
2547:
2546:
2541:
2536:
2531:
2530:
2529:
2524:
2522:Hypersexuality
2519:
2509:
2504:
2494:
2489:
2484:
2483:
2482:
2477:
2472:
2462:
2457:
2452:
2447:
2442:
2436:
2434:
2423:
2422:
2420:
2419:
2414:
2409:
2404:
2402:Sexual arousal
2399:
2394:
2389:
2384:
2379:
2378:
2377:
2363:
2358:
2353:
2348:
2343:
2338:
2332:
2330:
2319:
2318:
2307:
2306:
2299:
2292:
2284:
2277:
2276:
2262:
2242:
2188:
2169:(3): 820–825.
2152:Oxyura vittata
2140:
2126:
2106:
2092:
2072:
2058:
2038:
2031:
2013:
1999:
1977:
1948:
1897:
1883:
1863:
1849:
1829:
1820:
1795:
1777:
1760:
1739:(1): 177–182.
1719:
1712:
1686:
1669:
1631:
1614:
1595:(3): 195–207.
1579:
1565:
1546:(4): 729–733.
1530:
1509:
1495:
1475:
1468:
1448:
1439:
1430:
1418:
1393:
1374:(2): 158–160.
1351:
1334:
1327:
1301:
1294:
1268:
1251:
1244:
1226:
1219:
1198:
1179:
1167:
1152:
1138:
1114:
1112:
1109:
1108:
1107:
1102:
1097:
1092:
1087:
1082:
1080:Death erection
1077:
1072:
1066:
1065:
1049:
1046:
1018:
1015:
1003:mammal penises
924:
923:
898:
896:
889:
871:
868:
860:
857:
848:
845:
778:Main article:
775:
772:
770:
767:
764:
763:
760:
756:
755:
752:
748:
747:
744:
740:
739:
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732:
731:
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724:
723:
720:
716:
715:
712:
674:
671:
651:Main article:
648:
645:
631:
630:
621:
620:
619:
610:
609:
608:
607:
606:
604:
601:
574:sexual arousal
569:
566:
564:
561:
541:Main article:
538:
535:
521:
518:
433:
430:
391:sexual arousal
354:
353:
344:
343:
342:
333:
332:
331:
322:
321:
320:
311:
310:
309:
305:
304:
303:
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300:
297:
274:sexual arousal
193:sexual arousal
167:
166:
157:
151:
150:
145:
139:
138:
133:
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126:
122:
121:
113:
112:
103:
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4371:
4369:
4366:
4364:
4361:
4359:
4356:
4355:
4353:
4338:
4335:
4333:
4330:
4328:
4325:
4323:
4320:
4318:
4315:
4313:
4310:
4308:
4305:
4304:
4302:
4298:
4292:
4289:
4287:
4284:
4283:
4281:
4279:
4275:
4269:
4268:Breastfeeding
4266:
4264:
4261:
4259:
4256:
4254:
4251:
4250:
4248:
4246:
4242:
4236:
4233:
4231:
4228:
4226:
4223:
4221:
4218:
4217:
4215:
4213:
4207:
4201:
4198:
4196:
4193:
4192:
4190:
4188:
4184:
4178:
4175:
4173:
4169:
4166:
4162:
4159:
4157:
4154:
4152:
4149:
4147:
4144:
4142:
4139:
4137:
4134:
4133:
4132:
4129:
4125:
4122:
4120:
4117:
4115:
4112:
4111:
4110:
4107:
4106:
4104:
4102:
4096:
4090:
4087:
4085:
4082:
4080:
4077:
4075:
4072:
4070:
4067:
4065:
4061:
4060:Fertilization
4058:
4056:
4053:
4049:
4046:
4044:
4041:
4040:
4038:
4036:
4033:
4029:
4026:
4024:
4021:
4020:
4018:
4016:
4013:
4011:
4008:
4006:
4003:
4002:
4000:
3998:
3994:
3986:
3983:
3981:
3978:
3977:
3976:
3973:
3969:
3966:
3964:
3961:
3959:
3956:
3954:
3951:
3950:
3949:
3946:
3942:
3939:
3937:
3934:
3932:
3929:
3927:
3924:
3923:
3922:
3919:
3918:
3916:
3914:
3913:Gametogenesis
3910:
3904:
3901:
3899:
3896:
3894:
3891:
3889:
3886:
3884:
3881:
3880:
3878:
3876:
3872:
3868:
3864:
3857:
3852:
3850:
3845:
3843:
3838:
3837:
3834:
3822:
3819:
3817:
3814:
3812:
3809:
3807:
3804:
3802:
3799:
3797:
3794:
3792:
3789:
3787:
3784:
3782:
3779:
3777:
3774:
3772:
3769:
3767:
3764:
3762:
3759:
3757:
3754:
3753:
3751:
3747:
3741:
3738:
3736:
3733:
3731:
3730:Sexual ethics
3728:
3726:
3723:
3721:
3718:
3716:
3713:
3711:
3708:
3707:
3705:
3701:
3695:
3692:
3690:
3687:
3685:
3684:Single person
3682:
3680:
3677:
3675:
3672:
3670:
3667:
3665:
3662:
3660:
3657:
3653:
3650:
3649:
3648:
3647:Romantic love
3645:
3641:
3638:
3637:
3636:
3633:
3631:
3628:
3626:
3623:
3621:
3618:
3616:
3613:
3611:
3608:
3606:
3605:Homosexuality
3603:
3601:
3598:
3596:
3593:
3591:
3588:
3586:
3583:
3581:
3578:
3576:
3573:
3571:
3568:
3564:
3563:Herbivore men
3561:
3559:
3556:
3554:
3551:
3550:
3549:
3546:
3544:
3541:
3539:
3536:
3532:
3529:
3528:
3527:
3524:
3518:
3515:
3513:
3512:Demisexuality
3510:
3509:
3508:
3505:
3504:
3503:
3500:
3498:
3495:
3494:
3492:
3487:
3482:
3478:
3474:
3467:
3462:
3460:
3455:
3453:
3448:
3447:
3444:
3432:
3427:
3422:
3421:
3418:
3410:
3407:
3406:
3405:
3402:
3398:
3395:
3394:
3393:
3390:
3388:
3385:
3381:
3378:
3377:
3376:
3373:
3371:
3368:
3366:
3363:
3361:
3358:
3354:
3351:
3349:
3346:
3344:
3341:
3339:
3336:
3335:
3334:
3331:
3329:
3326:
3322:
3319:
3318:
3317:
3313:
3310:
3309:
3307:
3305:
3299:
3293:
3290:
3288:
3285:
3281:
3278:
3277:
3276:
3273:
3271:
3268:
3264:
3261:
3259:
3256:
3255:
3254:
3251:
3249:
3246:
3244:
3241:
3239:
3236:
3232:
3229:
3227:
3224:
3223:
3222:
3219:
3215:
3212:
3211:
3210:
3207:
3205:
3202:
3200:
3197:
3196:
3194:
3192:
3188:
3182:
3179:
3175:
3172:
3170:
3167:
3166:
3165:
3162:
3160:
3157:
3155:
3152:
3150:
3147:
3145:
3142:
3140:
3137:
3135:
3132:
3128:
3125:
3124:
3123:
3120:
3118:
3115:
3113:
3110:
3108:
3107:Sex positions
3105:
3103:
3100:
3098:
3095:
3093:
3090:
3088:
3085:
3083:
3080:
3076:
3073:
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3068:
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3063:
3061:
3058:
3056:
3053:
3052:
3051:
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3041:
3038:
3036:
3033:
3031:
3028:
3024:
3021:
3019:
3016:
3014:
3011:
3010:
3009:
3006:
3004:
3001:
2999:
2996:
2994:
2991:
2989:
2986:
2984:
2983:Forced orgasm
2981:
2979:
2976:
2974:
2971:
2969:
2966:
2964:
2961:
2959:
2956:
2954:
2951:
2949:
2946:
2944:
2941:
2939:
2936:
2934:
2931:
2929:
2926:
2924:
2921:
2919:
2916:
2915:
2913:
2911:
2907:
2901:
2900:United States
2898:
2896:
2893:
2891:
2888:
2886:
2883:
2881:
2878:
2876:
2873:
2871:
2868:
2867:
2865:
2863:
2859:
2853:
2850:
2848:
2845:
2843:
2840:
2838:
2837:Sexual ethics
2835:
2833:
2830:
2828:
2825:
2823:
2820:
2818:
2815:
2813:
2810:
2808:
2805:
2803:
2800:
2798:
2795:
2793:
2790:
2788:
2785:
2783:
2780:
2778:
2775:
2773:
2770:
2768:
2765:
2763:
2760:
2758:
2755:
2753:
2750:
2749:
2747:
2745:
2740:
2739:Relationships
2736:
2730:
2727:
2725:
2722:
2720:
2717:
2715:
2712:
2710:
2707:
2705:
2702:
2701:
2699:
2697:
2693:
2685:
2682:
2680:
2677:
2675:
2672:
2670:
2667:
2665:
2662:
2660:
2657:
2655:
2652:
2650:
2647:
2645:
2642:
2641:
2640:
2637:
2635:
2632:
2630:
2627:
2625:
2622:
2620:
2617:
2615:
2612:
2610:
2607:
2606:
2604:
2602:
2598:
2592:
2589:
2587:
2584:
2582:
2579:
2577:
2574:
2572:
2569:
2567:
2566:Gender binary
2564:
2563:
2561:
2559:
2555:
2551:
2545:
2542:
2540:
2537:
2535:
2532:
2528:
2527:Hyposexuality
2525:
2523:
2520:
2518:
2515:
2514:
2513:
2510:
2508:
2505:
2502:
2501:PLISSIT model
2498:
2495:
2493:
2492:Sex education
2490:
2488:
2485:
2481:
2478:
2476:
2473:
2471:
2468:
2467:
2466:
2463:
2461:
2458:
2456:
2453:
2451:
2448:
2446:
2443:
2441:
2440:Birth control
2438:
2437:
2435:
2433:
2428:
2424:
2418:
2415:
2413:
2410:
2408:
2405:
2403:
2400:
2398:
2395:
2393:
2392:Pre-ejaculate
2390:
2388:
2385:
2383:
2382:Pelvic thrust
2380:
2376:
2372:
2369:
2368:
2367:
2364:
2362:
2359:
2357:
2354:
2352:
2349:
2347:
2344:
2342:
2339:
2337:
2334:
2333:
2331:
2329:
2324:
2320:
2316:
2312:
2305:
2300:
2298:
2293:
2291:
2286:
2285:
2282:
2265:
2259:
2255:
2254:
2246:
2238:
2234:
2229:
2224:
2220:
2216:
2213:(6852): 128.
2212:
2208:
2207:
2199:
2192:
2184:
2180:
2176:
2172:
2168:
2164:
2163:
2155:
2153:
2144:
2129:
2123:
2119:
2118:
2110:
2095:
2089:
2085:
2084:
2076:
2061:
2055:
2051:
2050:
2042:
2034:
2028:
2024:
2017:
2002:
1996:
1991:
1990:
1981:
1966:on 2007-07-16
1965:
1961:
1955:
1953:
1937:
1933:
1929:
1925:
1921:
1920:
1912:
1910:
1901:
1886:
1880:
1876:
1875:
1867:
1852:
1846:
1842:
1841:
1833:
1824:
1810:on 2012-02-05
1809:
1805:
1799:
1792:. 2017-11-13.
1791:
1787:
1781:
1774:
1773:0-8385-8607-4
1770:
1764:
1756:
1752:
1747:
1742:
1738:
1734:
1730:
1723:
1715:
1713:9780128151457
1709:
1705:
1701:
1697:
1690:
1683:
1682:0-7225-1915-X
1679:
1673:
1665:
1661:
1657:
1653:
1649:
1645:
1638:
1636:
1628:
1627:0-393-32127-4
1624:
1618:
1610:
1606:
1602:
1598:
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1583:
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1569:
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1541:
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1513:
1498:
1492:
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1487:
1479:
1471:
1465:
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1427:
1422:
1407:
1403:
1397:
1389:
1385:
1381:
1377:
1373:
1369:
1362:
1355:
1348:
1347:1-56402-199-8
1344:
1338:
1330:
1328:9780128151457
1324:
1320:
1316:
1312:
1305:
1297:
1295:9780128151457
1291:
1287:
1283:
1279:
1272:
1265:
1264:0-443-06612-4
1261:
1255:
1247:
1241:
1237:
1230:
1222:
1220:9780321887603
1216:
1212:
1205:
1203:
1195:
1191:
1188:
1183:
1176:
1171:
1164:. p. 56.
1163:
1156:
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1131:
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1122:
1120:
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1101:
1098:
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1063:
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1043:
1039:
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1031:
1027:
1025:
1014:
1012:
1008:
1004:
1000:
995:
993:
992:
987:
979:
975:
971:
970:horse's penis
966:
964:
959:
957:
953:
948:
946:
941:
939:
935:
931:
920:
910:
905:
903:
897:
888:
887:
881:
876:
870:Other animals
867:
865:
856:
853:
844:
842:
838:
834:
830:
826:
822:
817:
815:
811:
806:
805:psychological
802:
801:physiological
797:
795:
791:
787:
781:
761:
758:
757:
753:
750:
749:
745:
742:
741:
737:
734:
733:
729:
726:
725:
721:
718:
717:
713:
710:
709:
703:
695:
691:
689:
685:
681:
670:
668:
663:
661:
654:
644:
641:
625:
614:
600:
598:
594:
593:courts of law
590:
585:
583:
579:
575:
560:
558:
557:morning glory
554:
551:(informally:
550:
544:
534:
532:
527:
517:
515:
510:
507:
503:
499:
495:
491:
487:
483:
479:
475:
474:smooth muscle
471:
467:
463:
459:
458:acetylcholine
455:
451:
450:sacral plexus
447:
443:
439:
429:
427:
423:
418:
416:
412:
408:
404:
400:
396:
392:
388:
384:
383:physiological
380:
376:
372:
368:
364:
348:
337:
326:
315:
296:
294:
289:
287:
283:
279:
275:
271:
266:
264:
260:
256:
252:
248:
244:
240:
236:
235:smooth muscle
232:
229:
225:
221:
217:
213:
209:
204:
202:
198:
194:
190:
186:
185:physiological
182:
178:
175:(clinically:
174:
162:
156:
152:
149:
146:
144:
140:
137:
134:
132:
128:
123:
118:
108:
102:
98:
95:
92:
90:
86:
83:
80:
78:
74:
69:
62:
57:
50:
45:
40:
37:
33:
26:
22:
4373:Men's health
4172:Paternal age
4168:Maternal age
4141:Tanner scale
4124:Virilization
4119:Feminization
4069:Implantation
4055:Insemination
4039:Ejaculation
4022:
4015:Masturbation
3931:spermatocyte
3903:Luteal phase
3888:Menstruation
3553:Love shyness
3531:Pansexuality
3497:Aromanticism
3302:Religion and
3292:Webcam model
3231:Survival sex
3221:Prostitution
3191:Sex industry
3102:Sex in space
3030:Masturbation
2870:Ancient Rome
2847:Sexual slang
2639:Sexual abuse
2386:
2346:Insemination
2267:. Retrieved
2252:
2245:
2210:
2204:
2191:
2166:
2160:
2151:
2143:
2131:. Retrieved
2116:
2109:
2097:. Retrieved
2082:
2075:
2063:. Retrieved
2048:
2041:
2022:
2016:
2004:. Retrieved
1988:
1980:
1968:. Retrieved
1964:the original
1939:. Retrieved
1922:(254): 1–5.
1917:
1908:
1900:
1888:. Retrieved
1873:
1866:
1854:. Retrieved
1839:
1832:
1823:
1812:. Retrieved
1808:the original
1798:
1789:
1780:
1763:
1736:
1732:
1722:
1695:
1689:
1672:
1650:(1): 54–63.
1647:
1644:Nitric Oxide
1643:
1617:
1592:
1588:
1582:
1568:
1543:
1539:
1533:
1522:. Retrieved
1512:
1500:. Retrieved
1485:
1478:
1458:
1451:
1442:
1433:
1421:
1410:. Retrieved
1408:. 2018-01-04
1405:
1396:
1371:
1367:
1354:
1337:
1310:
1304:
1277:
1271:
1254:
1235:
1229:
1210:
1182:
1170:
1161:
1155:
1143:. Retrieved
1128:
1030:Colloquially
1028:
1024:detumescence
1020:
996:
989:
967:
960:
952:bull's penis
949:
942:
930:canine penis
927:
914:
900:
862:
850:
818:
798:
783:
700:
676:
664:
656:
640:embarrassing
637:
597:phallophobia
586:
571:
556:
553:morning wood
552:
546:
523:
511:
489:
485:
482:vasodilating
477:
462:nitric oxide
435:
419:
409:pass during
379:venous blood
360:
292:
290:
267:
241:causing the
220:nitric oxide
205:
180:
176:
172:
170:
36:
4383:Human penis
4317:Dyspareunia
4312:Dysorgasmia
4258:Development
3796:Sexual norm
3635:Promiscuity
3526:Bisexuality
3375:LGBT people
3321:Tantric sex
3253:Sex tourism
3209:Pornography
3174:Erotic talk
3164:Virtual sex
3065:Cunnilingus
2895:South Korea
2890:Philippines
2802:Promiscuity
2497:Sex therapy
2475:Gynaecology
2117:Ornithology
1085:Human penis
1017:Terminology
829:masculinity
667:human penis
531:spinal cord
514:ejaculation
415:ejaculation
224:vasodilator
125:Identifiers
71:Identifiers
4352:Categories
4337:Vaginismus
4307:Anorgasmia
4161:Adrenarche
4156:Spermarche
4136:Gonadarche
3771:Sexecology
3543:Casual sex
3502:Asexuality
3287:Strip club
3270:Sex worker
3243:Sex museum
3214:Film actor
3082:Paraphilia
3008:Manual sex
2862:By country
2787:Orgasm gap
2704:Blue Movie
2323:Physiology
2133:5 December
1814:2012-01-29
1524:2013-11-07
1412:2021-10-22
1111:References
999:bird penis
986:tumescence
814:paroxetine
711:Angle (°)
688:colchicine
578:public sex
470:trabecular
299:Physiology
228:trabecular
4368:Andrology
4263:Lactation
4253:Thelarche
4230:Andrology
4177:Menopause
4074:Pregnancy
4064:Fertility
4019:Erection
3975:Germ cell
3948:Oogenesis
3936:spermatid
3898:Ovulation
3710:Hypergamy
3630:Polyamory
3585:Free love
3489:phenomena
3409:Sex magic
3387:Mormonism
3304:sexuality
3159:Urolagnia
3149:Tribadism
3097:Sexercise
3075:Irrumatio
3060:Anilingus
3018:Fingering
2998:Group sex
2993:Gang bang
2963:Fetishism
2938:Child sex
2792:Polyamory
2772:Free love
2634:Obscenity
2558:diversity
2470:Andrology
2432:education
2397:Pregnancy
1989:The Horse
1540:Eur. Urol
1388:144906565
1075:Cock ring
1011:lake duck
790:andrology
673:Direction
660:pubescent
452:into the
411:urination
286:impotence
4200:Vivipary
4170: /
4151:Menarche
4146:Pubarche
4028:Clitoral
3980:gonocyte
3953:oogonium
3883:Menarche
3749:See also
3694:Swinging
3664:Sex life
3620:Marriage
3590:Foreplay
3580:Flirting
3548:Celibacy
3477:sexology
3316:Hinduism
3312:Buddhism
3248:Sex shop
3169:Cybersex
3144:Swinging
3127:Foreplay
3070:Fellatio
3050:Oral sex
2943:Creampie
2928:Bareback
2923:Anal sex
2777:Marriage
2767:Flirting
2554:Identity
2507:Sexology
2487:Safe sex
2351:Intersex
2237:11557968
1755:17034495
1664:16828320
1560:16473458
1190:Archived
1100:Priapism
1048:See also
917:May 2024
909:relocate
880:stallion
852:Priapism
847:Priapism
759:120–180
454:arteries
422:foreskin
231:arteries
173:erection
42:Erection
4235:Hormone
4131:Puberty
3404:Thelema
3370:Judaism
3275:Sex toy
3204:Erotica
3092:Quickie
3087:Pompoir
3023:Handjob
2978:Footjob
2968:Fisting
2807:Romance
2782:Modesty
2744:society
2696:History
2480:Urology
2328:biology
2311:Outline
2269:22 July
2215:Bibcode
2183:4089612
2162:The Auk
2099:22 July
2065:22 July
2006:22 July
1936:3503919
1890:22 July
1856:22 July
1733:BJU Int
1609:9292834
1502:22 July
1145:22 July
1038:English
1032:and in
982:4 times
961:A male
945:orifice
934:baculum
907:Please
825:success
821:potency
810:lithium
794:urology
751:95–120
468:in the
399:urethra
371:puberty
183:) is a
136:D010410
82:D010410
4291:Female
4245:Breast
4048:Female
4035:Orgasm
4023:Penile
3985:gamete
3958:oocyte
3640:Female
3360:Daoism
3263:Female
3226:Sacred
3139:Sumata
2958:Facial
2948:Edging
2624:Incest
2445:Condom
2427:Health
2371:Female
2366:Orgasm
2356:Libido
2260:
2235:
2206:Nature
2181:
2124:
2090:
2056:
2029:
1997:
1970:7 July
1941:19 May
1934:
1881:
1847:
1790:nhs.uk
1771:
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1292:
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1242:
1217:
1136:
743:85–95
735:60–85
727:30–60
582:nudity
568:Social
512:After
393:. The
239:dilate
201:libido
4378:Penis
3963:ootid
3941:sperm
3365:Islam
3258:Child
2885:Japan
2880:India
2875:China
2201:(PDF)
2179:JSTOR
2157:(PDF)
1932:JSTOR
1914:(PDF)
1384:S2CID
1364:(PDF)
1034:slang
1007:lymph
978:glans
963:fossa
833:shame
754:19.8
738:30.9
730:29.6
719:0–30
658:post-
464:from
426:glans
407:semen
403:urine
263:veins
251:blood
189:penis
159:[
105:[
4286:Male
4195:Ovum
4043:Male
3968:ovum
3615:LGBT
3475:and
3314:and
3280:Doll
2988:Frot
2933:BDSM
2742:and
2649:Rape
2556:and
2373:and
2326:and
2271:2013
2258:ISBN
2233:PMID
2135:2012
2122:ISBN
2101:2013
2088:ISBN
2067:2013
2054:ISBN
2027:ISBN
2008:2013
1995:ISBN
1972:2007
1943:2010
1892:2013
1879:ISBN
1858:2013
1845:ISBN
1769:ISBN
1751:PMID
1708:ISBN
1678:ISBN
1660:PMID
1623:ISBN
1605:PMID
1556:PMID
1504:2013
1491:ISBN
1464:ISBN
1343:ISBN
1323:ISBN
1290:ISBN
1260:ISBN
1240:ISBN
1215:ISBN
1147:2013
1134:ISBN
837:loss
827:and
812:and
762:4.9
746:9.9
722:4.9
647:Size
587:The
524:The
496:and
488:and
413:and
405:and
389:and
284:and
272:and
257:and
233:and
131:MeSH
77:MeSH
4187:Egg
3865:of
2601:Law
2429:and
2313:of
2223:doi
2211:413
2171:doi
2167:117
1924:doi
1741:doi
1700:doi
1652:doi
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