Physiology 1021 Lecture Notes - Lecture 3: Lingual Lipase, Salivary Gland, Intestinal Gland

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: John Ciriello

Document Summary

Secretes a watery liquid that contains salivary amylase. High in water, high in amylase: submandibular gland. Secretes a thicker liquid that contains mucus and amylase. Mix of water & mucus, moderate levels of amylase: sublingual gland. Involuntary control: co-ordinate contraction of the muscles in the esophagus, propels bolus toward the stomach (gravity not necessary, secondary peristalsis initiated bolus is lodged items in the esophagus. Inactivation of salivary amylase carbohydrate digestion stops: activation of lingual lipase lipid digestion can occur, activation of pepsin (from pepsinogen) protein digestion can occur, kills microbes, denatures (unwraps folded structure) proteins, stimulates secretion of hormones. Secretion: hcl, pepsin, gastric lipase, intrinsic factor, mucus/bicarbonate, gastrin (endo) Secretion: mucus, lysozyme, bicarbonate, zymogens, digestive enzymes, bile. Digestion: brush border enzymes, activated zymogens, pancreatic lipase & amylase. Insulin from beta cells *gip** endocrine pancreas: increased motility of. Intestinal phase also inhibits the gastric phase (bossy older sister: decreased secretions from, stomach (hcl, decreased motility of, stomach & decreased gastric emptying.