Physiology 3120 Lecture Notes - Salivary Gland, Acinus, Parotid Gland

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

Document Summary

Influences cv system (diverts 1/3 blood), has its own nervous system (enteric), largest endocrine organ (by weight and by number of enzymes), contributes to body ph and total body ion content. More gut cancer deaths than any other cancer (pancreas, liver, esophageal, etc) so both clinically and economically important, most surgeries performed on this organ system and most days are lost from work because of gut" problems. Functions: lubricate bolus, slight digestion (amylase), lubricate oral cavity (protective), also some antibacterial actions by lysozymes. salivary glands have adopted to the diet of the animal being studied secretions of the 3 glands are different. Salivon is primary unit of the gland. Myoepithelial cells have ability to contract and can help (not primary reason for movement) fluid move out of acinus. Salivon behaves like a nephron, has pressure gradient, fenestrated membrane, capillary bed surrounding it. Primary salivary fluid is secreted by the acinus cells of the salivon.