mesenteron definition

  • noun:
    • See midgut.
    • The midgut.
    • all of that part of the alimentary canal that is created through the primitive enteron and is lined with hypoblast. It's distinguished from the stomodæum, part on anterior end of channel, like the cavity associated with lips, therefore the proctodæum, part in the posterior end, which are formed by invagination as they are lined with epiblast.
    • In embryology, the inner associated with archenteron or primitive bowel; the intestinal cavity in an early stage, bounded because of the hypoblast.
    • In sea-anemones and comparable polyps, the key digestive cavity or tummy; in Mollusca, the stomach and intestine. Compare stomodæum and proctodæum.

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