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169:, or "incomplete", extending only part way into the cavity (the terms "perfect" and "imperfect" are sometimes used instead). They stretch from the pedal disc to the oral disc, and there are two perforations or ostia near the oral disc. Mesenteries are usually in pairs. The free edge of incomplete mesenteries are thickened to form glandular, ciliated bands called mesenterial filaments. The lower ends of the mesenterial filaments are elongated into
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205:, have at least eight complete mesenteries and a variable number of incomplete ones near the base. The functional significance of the mesenteries in sea anemones is unclear. Their margins are involved in only a limited amount of digestion and absorption, so their chief function may be to provide support to help the animal maintain its shape.
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that encloses the intestines and their associated organs and connect them with the dorsal wall of the abdominal cavity. In invertebrates, a mesentery is a support or partition in a body cavity serving a similar function to the mesenteries of vertebrates.
119:. In segmented organisms such as earthworms, there are a pair of coelomic cavities in each segment. The mesothelium of the body wall is extended round the central gut to form a mesentery, a longitudinal partition in the
123:. Above the gut is the dorsal mesentery and below the gut, the ventral mesentery. The transverse partition between the separate segments is known as a septum.
187:, have the mesenteries arranged radially in pairs which develop cyclically. The mesenteries deposit calcium carbonate which forms a stony ridge, the
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215:, have eight primary mesenteries which alternate with the eight tentacles. The mesenteries are complete and unpaired and bear unilobed filaments.
177:(stinging cells) and can protrude through the body wall or mouth. The gonads are situated on the mesenteries alongside the mesenterial filaments.
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enclosing the intestines; in other organisms it forms complete or incomplete partitions of the body cavity, whether that is the
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Invertebrate animals. Botany: the natural history of plants. Geology: the natural history of the earth's structure. Glossary
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is a membrane inside the body cavity of an animal. The term identifies different structures in different
153:, the mesenteries are sheet-like partitions that extend from the body wall of the animal into its
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Ruppert, Edward E.; Fox, Richard, S.; Barnes, Robert D. (2004).
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398:Dorit, R. L.; Walker, W. F.; Barnes, R. D. (1991).
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191:, between each pair of mesenteries and builds the
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237:. Claxton, Remsen & Haffelfinger. p. 96.
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350:. Discovery Publishing House. pp. 195–199.
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231:Ruschenberger, William Samuel Waithman (1871).
68:The word "mesentery" is derived from the Greek
98:is a membrane consisting of a double fold of
37:) showing complete and incomplete mesenteries
326:: CS1 maint: multiple names: authors list (
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53:: in vertebrates it is a double fold of the
16:Membrane inside the body cavity of an animal
278:. Cambridge University Press. p. 28.
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306:. Cengage Learning. pp. 138, 206.
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371:Barnes, R.S.K.; Hughes, R.N. (2009).
344:Khanna, Dev Raj; Yadav, P.R. (2005).
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157:. They are composed of a layer of
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374:An Introduction to Marine Ecology
304:Invertebrate Zoology, 7th edition
161:sandwiched between two layers of
113:bilaterally symmetrical organisms
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135:Dissection of a sea anemone
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252:"Definition of Mesentery"
141:11 – one of the two ostia
347:Biology of Coelenterata
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72:, "in the middle" and
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272:Willmer, Pat (1990).
173:which are armed with
155:gastrovascular cavity
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26:Terrazoanthus onoi
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256:. Retrieved
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185:Scleractinia
181:Stony corals
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163:gastrodermis
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209:Soft corals
92:vertebrates
80:Vertebrates
258:2015-05-20
219:References
213:Alcyonacea
203:Actiniaria
175:cnidocytes
100:peritoneum
55:peritoneum
31:Zoantharia
322:cite book
193:corallite
159:mesogloea
107:Bilateria
96:mesentery
86:Mesentery
47:mesentery
431:Category
211:, order
201:, order
183:, order
151:Anthozoa
147:Cnidaria
127:Cnidaria
63:Anthozoa
408:609–610
402:Zoology
171:acontia
167:pharynx
74:enteron
43:zoology
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189:septum
117:coelom
59:coelom
70:mesos
51:phyla
412:ISBN
379:ISBN
352:ISBN
328:link
308:ISBN
280:ISBN
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