mes·en·ter·on (měz-ěn'tə-rŏn', měs-) n. See midgut. mes·en'ter·on'ic adj.
mid·gut (mĭd'gŭt') n.
The middle section of the digestive tract in a vertebrate embryo from which the ileum, jejunum, and portions of the duodenum and colon develop. Also called mesenteron.
The middle portion of the digestive tract of certain invertebrates, such as arthropods, lined with an enzyme-secreting tissue and serving as the main site of digestion and absorption.
Main Entry: mes·en·ter·on Pronunciation: (')mez-'ent-&-"rän, (')mEz-, (')mEs-, (')mes-, -r&n Function: noun Inflected Form: pluralmes·en·tera/-&-r&/ : the part of the alimentary canal that is developed from the archenteron and is lined with hypoblast