Ch 3, 9-9-09

Ch 3, 9-9-09 - Ch3:Digestion,Absorption andTransport...

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Ch 3:Digestion, Absorption and Transport
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Objectives Digestion Anatomy of GI track Secretions of Digestion Absorption Intestinal Cells Circulatory System Vascular and Lymphatic System Regulation Bacteria, Hormones and Nerve  Pathways
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Digestion Process by which food, large molecules, is  broken down to produce smaller,  absorbable units. Both a  mechanical  and  chemical  process
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Basic anatomy of the GI tract mouth   esophagus   stomach   small  intestine   large intestine   rectum    anus Lumen The inner space within the  gastrointestinal (GI) tract Continuous from one end to the other Digestion
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GI Tract Anatomy
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Digestion Mouth (process of digestion begins) Move food around mouth, facilitate chewing  and swallowing Mastication The process of chewing Stimulation of taste buds Detect four basic sensations: sweet,  sour, bitter, and salty
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Digestion Pharynx Short tube shared by both digestive system and  respiratory system Epiglottis  Closes air passage to avoid choking when  swallowing by preventing food to enter the lungs Esophagus Tube that leads the bolus to the stomach Esophageal sphincters Bolus = Foods After swallowing the food  is called a bolus
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This note was uploaded on 10/31/2009 for the course HUN 1201 taught by Professor Razsaadat during the Fall '08 term at FSU.

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Ch 3, 9-9-09 - Ch3:Digestion,Absorption andTransport...

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