HK 2810 Lecture Notes - Lecture 9: Internal Anal Sphincter, Amylase, Brush Border

• School: University of Guelph
• Department: Human Kinetics
• Course: HK 2810
• Professor: Kerry Ritchie

Document Summary

Specialized tube, organized into compartments separated by sphincters, for sequential processing. Flow (q) = p1 - p2 / r (resistance) resistance comes from the sphincters (constricting or relaxing: p - change in pressure so we can have flow in downward direction. Human is a donut epithelial cells line the tubes stil considered outside of the body. Upper esophageal sphincter: made of striated muslces (voluntary control over choose to swallow, most constricted of sphincters. Pyloric sphincter: separates stomach from si smooth muslce involuntary stays somewhat open when food is small enough it can fir through: acts as a size filter not very constricted. Sphincter of oddi: separates acessory organs (gall bladder, peancreas) and regulates when the substances from these organs get released into si smooth muslce involuntary control. Si: main spot for digestion and absorption. Anal sphincter: internal anal sphincter smooth muscle: external anal sphincter striated muscle. Primary neural circuitry of the git that controls function aka "mini brain"