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The erector spinae is attached to the medial crest of the sacrum (a slightly raised feature of the sacrum closer towards the midline of the body as opposed to the "lateral" crest which is further away from the midline of the body), to the spinous processes of the lumbar, and the eleventh and twelfth
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This large muscular and tendinous mass varies in size and structure at different parts of the vertebral column. In the sacral region, it is narrow and pointed, and at its origin chiefly tendinous in structure. In the lumbar region, it is larger, and forms a thick fleshy mass. Further up, it is
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The muscular fibers form a large fleshy mass that splits, in the upper lumbar region, into three columns, viz., a lateral (iliocostalis), an intermediate (longissimus), and a medial (spinalis). Each of these consists of three parts, inferior to superior, as follows:
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originates from the sacrum, spinous processes of the lumbar vertebrae, and transverse process of the last thoracic vertebra and inserts in the transverse processes of the lumbar vertebrae, erector spinae aponeurosis, ribs, and costal processes of the thoracic
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may also be beneficial to lower back health. Care should be taken to avoid injury to the lower back when targeting spinal erectors directly. Exercises include, but are not limited to:
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Below are examples of exercises by which the erector spinae can be strengthened for therapeutic or athletic purposes. Additionally, exercises of the
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The longissimus muscle is the intermediate and the largest of the three columns. It has three parts with different origin and insertion:
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is an inconstant muscle fiber that runs from the cervical and upper thoracic and then inserts in the external occipital protuberance.
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at Human
Anatomy Online, SUNY Downstate Medical Center - "Intermediate layer of the extrinsic muscles of the back, deep muscles."
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originates from the transverse processes of T3-T1, runs through C7-C3, and inserts in the mastoid process of the temporal bone.
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subdivided into three columns. They gradually diminish in size as they ascend to be inserted into the vertebrae and ribs.
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Diagram of a transverse section of the posterior abdominal wall, to show the disposition of the lumbodorsal fascia
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originates from the transverse processes of T6-T1 and inserts in the transverse processes of C7-C2.
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which originates from the spinous process of L3-T10 and inserts in the spinous process of T8-T2.
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which runs from the first 6 ribs to the posterior tubercle of the transverse process of C6-C4.
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originates from the spinous process of T2-C6 and inserts in the spinous process of C4-C2.
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which run more or less the length of the spine on the left and the right, from the
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regions. The erector spinae is covered in the lumbar and thoracic regions by the
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The spinalis muscle is the smallest and most medial column. It has three parts:
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From lateral to medial, the erector spinae muscles can be remembered using the
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Transverse section, showing the relations of the capsule of the kidney
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has the lumbar part (where its insertion is in the 12th to 7th ribs).
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Some of its fibers are continuous with the fibers of origin of the
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The erector spinae is not just one muscle, but a group of
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may be too technical for most readers to understand
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898:Video: Erector Spinae Muscle Group (back muscles)
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768:The posterior divisions of the sacral nerves
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346:Learn how and when to remove this message
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447:The iliocostalis originates from the
328:make it understandable to non-experts
848:"How to pronounce spinae in English"
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744:Right hip bone. Internal surface.
592:Upper thoracic vertebrae and ribs
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93:Posterior branch of spinal nerve
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63:Spinous processes of T1 and T2
33:The erector spinae muscle group
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872:. LifeHugger. Archived from
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49:Spinous processes of T9-T12
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792:Surface anatomy of the back
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370:, or sacral region, and
135:musculus erector spinae
118:Rectus abdominis muscle
476:iliocostalis cervicis
470:iliocostalis thoracis
464:iliocostalis lumborum
412:supraspinous ligament
287:) to maintain stable
81:Lateral sacral artery
1310:Muscles of the torso
1258:clavipectoral fascia
1172:transversus thoracis
1119:thoracolumbar fascia
564:Intermediate column
505:longissimus cervicis
498:longissimus thoracis
396:thoracolumbar fascia
1181:serratus posterior
1145:Intercostal muscles
511:longissimus capitis
374:to the base of the
1197:thoracic diaphragm
1177:levatores costarum
1056:intertransversarii
1028:Transversospinales
914:2007-03-10 at the
870:"Medical mnemonic"
695:Pull-up (exercise)
606:Cervical vertebrae
69:cervical vertebrae
65:thoracic vertebrae
51:thoracic vertebrae
16:Human muscle group
1320:Medical mnemonics
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878:. Retrieved
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690:Good-morning
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615:S. cervicis
601:S. thoracis
560:Iliocostalis
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291:standing or
267:is a set of
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147:A04.3.02.002
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104:Extends the
1167:subcostalis
1013:longissimus
854:10 December
628:S. capitis
612:L. cervicis
609:I. cervicis
598:L. thoracis
595:I. thoracis
583:I. lumborum
567:Longissimus
489:Longissimus
483:Longissimus
457:iliac crest
124:Identifiers
1299:Categories
1225:subclavius
1041:multifidus
909:ithaca.edu
880:2009-12-15
810:References
710:Utkatasana
658:Spinalis.
625:L. capitis
501:vertebrae.
336:March 2016
113:Antagonist
1235:sternalis
1160:innermost
1074:trapezius
1046:rotatores
554:Insertion
299:Structure
59:Insertion
1190:superior
1185:inferior
1155:internal
1150:external
1084:rhomboid
1018:spinalis
990:cervicis
977:splenius
912:Archived
826:page 397
680:Deadlift
662:Training
636:mnemonic
574:Spinalis
524:Spinalis
518:Spinalis
392:cervical
388:thoracic
67:and the
1289:Anatomy
985:capitis
954:of the
952:Muscles
725:Push-up
364:tendons
360:muscles
322:Please
293:sitting
289:posture
269:muscles
100:Actions
39:Details
1275:Portal
1245:Fascia
1133:Thorax
1111:Fascia
956:thorax
834:(1918)
700:Rowing
668:glutes
646:pine.
455:, and
449:sacrum
390:, and
384:lumbar
368:sacrum
76:Artery
45:Origin
1094:minor
1089:major
824:from
705:Squat
656:Spine
620:Skull
376:skull
263:) or
256:-tər
182:[
171:71302
130:Latin
88:Nerve
968:Back
960:back
958:and
856:2015
652:Love
642:ove
418:and
372:hips
362:and
283:and
273:back
260:-nee
252:irr-
194:The
159:2254
142:TA98
640:I L
326:to
258:SPY
166:FMA
154:TA2
1301::
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254:EK
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