HTHSCI 1H06 Study Guide - Palatoglossal Arch, Lingual Papilla, Deciduous Teeth

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1H06
• Professor: Cale Zavitz

Document Summary

Peristalsis: alternating waves of muscle contraction and relaxation used to move food through the gi tract. Contractions are partly regulated by the enteric nervous system (another branch of the peripheral nervous system). Begin breaking down food in mouth mechanically (chewing) and chemically (breaking down complex sugars, adding other enzymes like lingual lipase- starts break down of fats) Lower and upper lips (labia)- help keep food within oral cavity while chewing. Connected to the gums by tissue appendages- frenula. Frenula- superior and inferior labal- limit amount of mobility lips have. Horses and giraffes do not have well-developed frenula, so their lips are hyper mobile. Lingual frenulum- on inferior surface of tongue, limits its posterior movement. Two little openings at base for submandibular gland. Submandibular gland- under bone of mandible, produces saliva, controlled by cn vii- facial nerve (also conveys sensations from anterior 2/3 of tongue) Uvula- grape- part of soft palate, responsible for closing off nasal cavity while swallowing.