NUTR 120 Lecture Notes - Lecture 10: Hydrochloric Acid, Portal Vein, Blood Sugar
Document Summary
Pattern of intake in north america: n. a. More refined (white) flour, increased in fat and increase in protein. Cho digestion and absorption: mouth: some starch is broken down into disaccharides (two glucose units maltose, enzyme is salivary amylase, stomach: hydrochloric acid denatures/inactivates salivary amylase, small intestine: major site of digestion. Glu+fructose: maltose/lactose/sucrose are now absorbed/absorption portal vein liver, smolin figure 4. 12. Glucose: basic facts: found in small amounts in purified glucose form (only in plant foods, main energy source for brain, central nervous system, red blood cells. Increase in glucose in blood is a signal to your pancreas, which releases the insulin hormone: once insulin is released: a) storage (of muscle and liver glycogen); b) use of glucose by body cells; c) storage of fat. Effects of insulin: a) facilitate the uptake of glucose from blood to cells; b) stimulation of glycogen and fat synthesis; c) return of blood glucose down to normal levels" (basal levels)
