HTHSCI 1LL3 Lecture Notes - Lecture 14: Genioglossus, Cranial Nerves, Umami

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1LL3
• Professor: All

Document Summary

Peristalsis: alternating waves of muscle contraction and relaxation used to move food through the gi tract. Partly regulated the enteric nervous system (another branch of the pns) Gi tract (the alimentary canal): stomach and intestine. Hollow tube from one end to the other (gums to bums), and there are accessory organs that produce secretions that get dumped into the lumen of the gi tract. Thus we are like a hollow tube, where everything that goes in gets absorbed and put into the body tissues. Ingestion, secretion, mixing and propulsion, digestion, absorption, defecation. Breaks down all of the food into its component parts (amino acids, simple sugars, fats, free fatty acids, glycerols), and these get incorporated into all of the structures in your body (thus you are what you eat) Appendages (skin-like flaps/attachments) that attach the labia to the gums. Limit the mobility that the lips have (hold them in place)