KINESIOL 1AA3 Lecture Notes - Lecture 16: Swallowing, Trachea, Proton-Pump Inhibitor

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 1AA3
• Professor: Krista Howarth

Document Summary

Gravity helps but is not necessary: three phases of swallowing: voluntary phase pharyngeal phase esophageal phase, voluntary phase. Bolos is formed tongue you press against the soft and hard palate forcing the bolus posterior in the oral cavity towards the oral pharynx initiating the swallowing process: pharyngeal phase. Bolus enters the oral pharynx, can move inferior or superior, but the body blocks the food from entering the nasopharynx by elevating the soft palate. larynx and pharynx move superiorly to receive the bolus. Pharyngeal constrictors contract to force the bolus into the esophagus, pushes on epiglottis it blocks the passage way of trachea. * superior blocks the nansocavity and middle pushes down on bolus. Tuesday, april 5, y pharyngeal contractor contracts and pushes bolus down. Upper esophageal sphincter opens allowing the bolus to enter the esophagus: esophageal phase. Under control by peristaltic waves (relaxation and contraction) Esophagus enters the stomach at the cardiac region (superior aspect of the stomach)