Zoology. the first portion of the vertebrate alimentary canal, extending from the pharynx and esophagus to the end of the stomach or gizzard and, in some animals, the anterior duodenum, functioning in the ingestion, temporary storage, and partial digestion of food.the first portion of the alimentary canal in arthropods and annelids, composed of ectodermal, chitin-lined tissue and usually comprising the pharynx, esophagus, crop, and gizzard.
Embryology. the upper part of the embryonic alimentary canal from which the pharynx, esophagus, lung, stomach, liver, pancreas, and part of the duodenum develop.
更多foregut例句
The notochord (ch) is seen below the brain, and below this again the crescentic foregut (al).
The commencing heart (ht), formed at this stage of two distinct tubes, is attached to the ventral side of the foregut.
Cleveland et al. isolated a bacterial organism from the foregut of the wood-feeding cockroach Panesthia angustipennis.
Hence when the stomach develops from the foregut, as a specialized segment of the same, it is supplied by vagus branches.