HTHSCI 1H06 Lecture 1: HTH SCI 1H06 Lecture 1: GI 1: Mouth & esophagus
Document Summary
Deglutination: swallowing: the gi tract is aka alimentary canal (journey from gums to bums, step 1. ~sot palate helps with when you"re coughing, sot palate will move up to close of nasal pharynx sending air out through mouth. also helps out with swallowing +uvula help so food doesn"t go up your nose. ~uvula has sensory receptors, if you touch it you get gag relex. ~you cant swallow your tongue because of the lingual frenulum holding it down. 5 primary tastes: sweet, salty, sour, umami (savoury). Most of the approximately 10,000 taste buds are found on the papillae (surface) of the tongue. They take on diferent shapes types of taste buds: Vallate buds. papillae: v-shaped, 12 each containing 100- 300 taste. Fungiform tongue each containing 5 taste buds. papillae: look like mushroom, scatered over. Foliate degenerate in childhood. papillae: in the lateral (side) margins of tongue;