NHM 101 Notes- Week 2
NHM 101 Notes- Week 2 NHM 101
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This 2 page Class Notes was uploaded by Alexia Acebo on Sunday September 6, 2015. The Class Notes belongs to NHM 101 at University of Alabama - Tuscaloosa taught by Libo Tan in Summer 2015. Since its upload, it has received 54 views. For similar materials see Intro Human Nutrition in Environmental Science at University of Alabama - Tuscaloosa.
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Date Created: 09/06/15
23 of adults use the internet friends colleagues media Best Source Qualified nutrition professionals Registered dietitians Some physicians Registered Dietitian I RD o Bachelor s degree 1200 hr internship National registered dietitian exam Continuing education credits 0 O O 0 Most states require licensure Digestion process by which food mostly macronutrients is broken down into smaller units Absorption Uptake of nutrients by cells of small intestine for transport into blood lymph system GI tract Flexible muscular tube from mouth to anus Lumin inner space within GI tract Mouth Functions 0 Chewing o Secretion from salivary glands blend with food for easy swallowing o Carb digestion begins here food enters esophagus when the sphincter opens sphincter circular muscle surrounding and able to close and open a body opening gtkeeps ow of food in 1 direction Multiple Sphincters throughout body Upper mouth pharynx to esophagus Lower esophagus to stomach Pyloric stomach to small intestine Ileoceal small to large 0 2 in anus Esophagus Upper esophageal sphincter opens and food enters esophagus NO DIGESTION Stomach Strongest muscle thickest wall Food goes from upper to lower portion 0 Gastric juices secreted by stomach walls chyme o Digestion of protein and fat begins in stomach Pyloric sphincter opens 3 times to allow chyme into small intestine Small Intestine 10 feet 3 segments 0 duodenum o jejunum o ileum I most digestion amost ALL absorption common bile ductgt pancreas and gall bladder liner produces bile and is stored in gall bladder then drips to pancreas Large Intestine colon remaining contents enter through ileocecal valve How does food move Peristalsis wavelike contractions of the GI tract that move food along gtbegins in esophagus
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