Class 9 GI Physiology 2011

Class 9 GI Physiology 2011 - HUN4445 Gastrointestinal...

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HUN4445 Gastrointestinal Physiology Objectives By the end of class, students will be able to: Describe the process of digestion and absorption Identify factors that affect LES (lower esophageal sphincter) pressure, increase gastric secretions, irritate the mucosa and affect gastric emptying Locate the sites of absorption for nutrients State the definitions of dietary and functional fiber and describe their effects on the GI tract Functions of the GI Tract Digestion Absorption Physical Barrier Immunologic Functions Oral Digestion Food is crushed, moistened and lubricated Addition of salivary amylase some starch to dextrins Antibacterial Swallowing Problems Causes of Dysphagia decreased lip closure poor tongue control reduced oral sensation or awareness dry mouth inflammation of the oral cavity delayed, absent or uncontrolled swallow reduced esophageal peristalsis esophageal obstruction Factors the Decrease LES Pressure Factors that Increase Reflux
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Treatment of GERD Dietary intervention Lose weight if overweight Avoid smoking Avoid food intake within 3 hours of bedtime, raise head of bed
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This note was uploaded on 12/09/2011 for the course HUN 4445 taught by Professor Sitren during the Spring '08 term at University of Florida.

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Class 9 GI Physiology 2011 - HUN4445 Gastrointestinal...

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