What Is Intestinal Juice?

Intestinal juice Intestinal juice, such as mammals, is the pancreatic juice, bile, and secretion of the intestine itself. Fish's intestines have no secretion, so its intestinal fluid is only bile and pancreatic juice.

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The mammalian intestinal secretion is mainly as follows: (1) Duodenal fluid: colorless, viscous and alkaline secreted by the Brett's glands. Contains pepsin-like protease, which has the function of curdling, breaking down fat, and breaking down starch. Its secretion can be promoted by mechanical stimulation and intestinal fat. It also contains enterokinase that activates trypsinogen in pancreatic juice; (2) Small intestinal fluid: secreted by intestinal glands and epithelial cells, yellow and transparent and alkaline (PH7.7) when centrifuged, the specific gravity is around 1.007, and most of it is water Contains 0.58-0.67% of NaCl, 0.22% of sodium carbonate, and contains phosphoprotein mucus. This intestinal fluid is an enzyme that digests food. It contains aminopeptidase, invertase, lactase, maltase, nuclease, and lecithinase. It also contains phosphate [ester] enzyme. Secretion due to mechanical or chemical stimulation of the intestinal mucosa when the food enters the intestine; or due to the action of intestinal secretory peptides; (3) Large intestine fluid: a odorless, viscous liquid, generally neutral, containing digestive enzymes such as ammonia Peptidases, dipeptidases, and amylases are secreted by mechanical stimuli and play a role in the transport of contents and the formation of feces.