BIOL 1107 Lecture Notes - Lecture 19: Pancreatic Duct, Lacteal, Microvillus
Document Summary
Sensors in the muscle of the stomach that trigger signals in brain which sends signal to stomach and endocrine tissue to begin moving their contents into the lumen to begin chemical alterations. Gastrin is the hormone that the stomach secretes in response to expansion to begin to release their content. The more polypeptides you can get from a protein, the less acidic the lumen becomes and the more gastrin is encouraged to move into the stomach. Once the polypeptides have been destroyed, neutralization drops off. Endocrine tissue slows down the release of gastrin. The drop in ph encourages the brain to send a signal to the stomach muscle to initiate greater contractions (peristalsis). The more polypeptides= the longer the stomach will spend chemically altering the food. Built in endocrine tissue clusters, and sensors that sense a change in ph send signal to tissue to make secretin to move through the blood to your pancreas.
