Anatomy and Cell Biology 3319 Lecture Notes - Lecture 40: Right Gastric Artery, Peritoneal Cavity, Left Gastroepiploic Artery

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 3319
• Professor: Peter Merrifield

Document Summary

Ingestion & digestion (upper gi tract): mouth, pharynx, esophagus, stomach: absorption & defecation (lower gi tract): small intestine, large intestine, rectum/anus. Swallowing: oral stage (mouth oropharynx, mastication, voluntary, action: tongue elevates pushes food bolus against hard palate & backwards into oropharynx. Intrinsic muscles: (superior longitudinal: extrinsic muscles: styloglossus (elevate back of tongue to push food into, pharyngeal stage (oropharynx esophagus) pharynx from oral cavity) & palatoglossus, pushing food to the back of the throat to swallow. Involuntary: two stages: blockage of 3 openings & contraction of pharynx forces bolus into esophagus, 1. Blockage of 3 openings: oral cavity continued elevation of the back of the tongue, so that food does not regurgitate, nasocavity elevation of the soft palate. Larynx elevation of the larynx which causes epiglottis to fold over the laryngeal inlet: suprahyoid muscle, thyrohyoid muscle, vertical muscles of the laryngopharynx (palatopharyngeus, stylopharyngeus, salpingopharyngeus, 2.