In all forms in which the gland is found it is connected with the post-gastric intestine and marks the beginning of the midgut.
It is well developed in the selachians, forming a triangular body connected with the beginning of the midgut (Fig. 202).
The entrance of the hepatic duct separates fore- and midgut.
Thus 191 ccal appendages are found surrounding the beginning of the midgut in Scomber scomber.
The midgut forms a simple loop with a descending and ascending limb closely bound together by mesenteric attachment.
This type is prevalent in amphibia and fish (Fig. 112, distal segment of midgut).
midgut, closely associated at its beginning with the liver and pancreas.
The midgut is usually the longest portion of the intestinal tube.
midgut mid·gut (mĭd'gŭt')
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, that is lined with an enzyme-secreting tissue and that serves as the main site of digestion and absorption.