Digestive System

Digestive System - DIGESTIVE SYSTEM Extended tube with...

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1 DIGESTIVE SYSTEM Functions: Extended tube with specialized parts between 2 openings: Anatomy of the Digestive System
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2 Anatomy of the Digestive System Anatomy of the Digestive System
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3 Mouth Food enters system at mouth, undergoes first steps Salivary glands: Salivary glands: • Parotid glands Parotid glands • Submandibular Submandibular glands glands • Sublingual glands Sublingual glands •Release saliva, enzymes, and antibodies • Lubricate food for swallowing Mouth Food enters system at mouth, undergoes first steps • Teeth (32 in adult): Teeth (32 in adult): • bite and chew food •8 •4 •8 •12 Tongue: Tongue: • mixes chewed food with saliva into bolus
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4 The Challenge of Swallowing But sometimes bolus “goes down the wrong pipe” and causes a gag reflex Use Heimlich Maneuver Use Heimlich Maneuver During swallowing • soft palate closes off nasopharynx • epiglottis covers larynx Esophagus – wavelike muscular contractions pushes bolus thru esophagus to stomach
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This note was uploaded on 04/17/2008 for the course BIO 1004.212.0 taught by Professor Douglasmerrill during the Winter '07 term at RIT.

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Digestive System - DIGESTIVE SYSTEM Extended tube with...

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