Physiology 3120 Lecture Notes - Lecture 10: Peristalsis, Osmotic Concentration, Diarrhea

• School: Western University
• Department: Physiology
• Course: Physiology 3120
• Professor: Tom Stavraky

Document Summary

Organs that are part of gi tract actually come in contact with food: Stomach: little digestion, holds food until small intestine ready. Small intestine: most digestion, all absorption most important. Appendix: very small outgrowth at junction b/w small and large intestine; stores good bacteria that replenish large intestine bacteria when wiped out by bacteria. Accessory glands make products that go into gi tract to help process food: Pancreas: looked at endocrine function before, now exocrine function which is to secrete enzymes into small intestine to help chemical digestion. Most parts of gi tract made up of same tissue layers ie: stomach, small intestine, large intestine thus same for the most part. Little difference in tissue type of mouth, esophagus, rectum and anus. Enterocytes: epithelial cells in single layer lining lumen to directly contact contents of lumen epithelial cells = polarized so one end acts differently from other for transport purposes.