PPT_Chapter_56_updated - Introduction to the Gastrointestinal System Chapter 56 Copyright 2013 Wolters Kluwer Health | Lippincott Williams Wilkins GI

PPT_Chapter_56_updated - Introduction to the...

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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Introduction to the Gastrointestinal SystemChapter 56
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins GI System (cont.)The GI system is the only system in the body open to the external environmentComposed of one continuous tube Begins at the mouthProgresses through the esophagus, stomach, and small and large intestinesEnds at the anusAccessory OrgansPancreasLiver Gallbladder
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins GI System
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Layers of the GI TubeMucosaMuscularis Mucosa Nerve PlexusAdventitia
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Layers of Nerves in the Nerve PlexusSubmucosal Layer Myenteric Layer
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Layers of the Gastrointestinal Tract
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Major Activities of the GI SystemSecretion: Of enzymes, acid, bicarbonate, and mucusAbsorption: Of water and almost all of the essential nutrients needed by the bodyDigestion: Of food into usable and absorbable componentMotility: Movement of food and secretions through the system
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