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NSG 340 Med Surg Chapter 43 medical surgical Medical/Surgical Nursing I: Acute

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James Moore
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Medical-Surgical Nursing
Chapter 43- Assessment of the Digestive and Gastrointestinal Function

Med Surg Chapter 43
medical surgical
University of Phoenix
Medical/Surgical Nursing I: Acute (NSG 340)

Medical-Surgical NursingChapter 43- Assessment of the Digestive and Gastrointestinal FunctionAnatomic and physiologic OverviewAnatomy of the Gastrointestinal Systemothe GI tract is 7-7.9 meters (23-26 feet) in length that extends from the mouth to the esophagus, stomach, small and large intestines, and rectum, to the terminal structure, the anusoanus- last section of the GI tract; outlet for waste products from the GI systemoesophagus- collapsible tube connecting the mouth to the stomach, through which food passes as it is ingestedostomach- distensible pouch into which the food bolus passes to be digested by gastric enzymesosmall intestine- the longest segment of the GI tractoabsorption- the process by which nutrients enter the bloodstreamolarge intestine- the portion of the GI tract into which waste material from the small intestine passes as absorption continues and elimination begins; consists of several parts: ascending segment, transverse segment, descending segment, sigmoid colon, and rectum aka colonoportal venous system:superior mesentericinferior mesentericgastric spleniccystic veinsFunction of the Digestive SystemoMajor functions of the GI tract:Breakdown food particles into the molecular form for digestionAbsorption into the bloodstream of small nutrient molecules produced by digestionElimination of undigested unabsorbed foodstuffs and other waste productsoChewing and Swallowing

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NSG 340 Med Surg Chapter 43 medical surgical Medical/Surgical Nursing I: Acute

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