Mesentery definition

mĕzən-tĕrē, mĕs-
mesenteries
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The definition of mesentery is the membrane that wraps around the small intestine and connects it to the wall of the abdominal cavity.

An example of the mesentery is the peritoneum.

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Any of several folds of the peritoneum that connect the intestines to the dorsal abdominal wall, especially such a fold that envelops the jejunum and ileum.
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(anat.) A supporting membrane or membranes enfolding some internal organ and attaching it either to the body wall or to another organ; esp., a double thickness of the peritoneum enfolding most of the small intestine and attaching it to the spinal wall of the abdominal cavity.
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Any of several folds of the peritoneum that connect the intestines to the dorsal abdominal wall, especially such a fold that envelops the jejunum and ileum.
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(anatomy) The membrane that attaches the intestines to the wall of the abdomen, maintaining their position in the abdominal cavity, and supplying them with blood vessels, nerves, and lymphatics.
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Other Word Forms

Noun

Singular:
mesentery
Plural:
mesenteries

Origin of mesentery

  • Middle English mesenterie from Medieval Latin mesenterium from Greek mesenterion meso- meso- enterion diminutive of enteron entrails en in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek μέσος (mesos, “middle") + ἔντερον (enteron, “gut")

    From Wiktionary

Mesentery Sentence Examples

  • In the region of the mouth where the two halves of the small arm-sinus approach one another they open into a central sinus lying beneath the oesophagus and partly walled in by the two halves of the ventral mesentery.

  • The intestine is slung by a median dorsal and ventral mesentery which divides the body cavity into two symmetrically shaped halves; it is " stayed " by two transverse septa, the anterior or gastroparietal band running from the stomach to the body wall and the posterior or ileoparietal band running from the intestine to the body wall.

  • This vessel is nothing but a split between the right and left folds of the mesentery, and its cavity is thus a remnant of the blastocoel.

  • A median mesentery running dorsoventrally supports the alimentary canal and is continued behind it into the tail, thus dividing the body cavity into two lateral halves.

  • Each mesentery is attached by its upper margin to the peristome, by its outer margin to the body-wall, and by its lower margin to the basal disk.

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