NUTR 31500 Study Guide - Spring 2019, Comprehensive Final Exam Notes - Triglyceride, Pancreas, Milk
30 Mar 2019
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Mouth: chemical saliva mixes with the food, mechanical the process of chewing, release of starch-digesting enzyme (amylase) Esophagus: movement of food to stomach by peristaltic waves. Stomach: kill microorganisms with acid, release of protein-digesting enzyme (pepsin) Small intestine (duodenum, jejunum, and ileum: digestion and absorption of nutrients, ~90-100% of all absorption occurs in small intestine. Absorption: passive diffusion = no energy needed, facilitated diffusion = uses protein to transfer material, active transport = uses energy (atp, endocytosis = transfers material inside. Portal vein = connects two capillary veins lipids are absorbed in the lymphatic system and then goes to the liver or general circulation. Media adventitia lumen of the artery artery wall. Process: breakdown of molecules, conversion to acetyl-coa, metabolism of acetyl-coa to co2 and formation of atp. Anaerobic: no oxygen, glycolysis, produce atp. Aerobic: needs oxygen, citric acid cycle, produce atp. Systemic study of structure and behavior of the physical and natural world through observation and experiment.
