Nutrition CH.3 Remarkable Body (week 3)
Nutrition CH.3 Remarkable Body (week 3) NUTR 214 - 01
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NUTR 214 - 01
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This 3 page Class Notes was uploaded by Samone Hodges on Wednesday September 16, 2015. The Class Notes belongs to NUTR 214 - 01 at Radford University taught by Rachel Werkheiser in Summer 2015. Since its upload, it has received 62 views. For similar materials see Introduction to Nutrition in Nutrition and Food Sciences at Radford University.
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Date Created: 09/16/15
Nutrition 214 01 CHAPTER THREE The Remarkable Body week 3 Body trillion cells 1 Cells a Need nutrients bSelfcontained living entities i Depend on one another Basic needs 0 Controlled by genes i Production of protein Instruction for structural components of cells Affects how body handles nutrients iL Complete set of genes in a cell V Gene variants cells I tissues I organs I body systems 2 bodily uids a supplyenergy oxygen nutrients water b delivers fresh supplies picks up wastes 3 Circulating uids a Blood i Arteries b Lymph 0 Plasma 0 Extracellular uid Surrounds the cells derived from the blood in the capillaries 0 Intracellular uid Inside cells gives cells their shape all cell reaction take place blood heart I heart 1 Blood pumped to the rest of the body blood through digestive I liver kidneys cleansing of wastes in uence red blood cells 2 Kidneys determine red blood cell life expectancy kidney failure causes 3 Uncontrolled diabetes a Type II genetic diabetes b Type 11 doesn t identify insulin 4 Uncontrolled hypertension 5 Drug abuse blood is sensitive to malnutrition 4 Hormones affect nutrition a chemical messengers b secreated amp released into blood by glands c stimulates organs to take action 5 Glands monitor conditions of the body a Pancreas i Insulin and glucagon 6 Nervous system plays a role in hunger regulation a Cortex amp hypothalamus 7 Fight or ight reaction stress response a Neurotransmitters b Metabolism speeds up c Organ response d Heart disease 8 Digestion a Mechanical i Mouth chewing ii Stomach amp small intestine peristalsis chime travels through pyloric valve iii Large intestine iV Digestion is Virtually continuous 1 Determined by sleep amp exercise b Chemical i Digestive juices salivary glands stomach pancreas liver small intestine ii Hydrochloric acid kills microorganisms iii Intestine 1 Bile 2 Pancreatic juice 3 Digestive enzymes wall of intestine 4 Fiber Digestion cycle time spent Mouth less than a minute Stomach 12 hours Small intestine 78 hours Colon 1214 hours PP N Peristalsis muscular squeezing of esophagus stomach and small intestine pushes contents out M uid resulting from the actions of the stomach upon a meal Pyloric valve circular muscle of the lower stomach regulates the ow of partly digested foods M hormone from pancreas helps glucose enter cells from blood Glucagon hormone from pancreas stimulates the liver to release glucose into the bloodstream Hvdrochloric acid strong corrosive acid produced by stomach to assist digestion
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