ANT200H5 Lecture Notes - Lecture 2: Myoglobin, Constipation, Vitamin A
Document Summary
Strong acids in stomach kill potential pathogens. 2-3 hours in stomach, turns food into chime, sent to small intestine. Small intestine = most digestion and absorption: digestive enzymes from pancreas interact w food o. Breakdown of starches, sugars, fats, proteins into component parts: absorbed by cells lining small intestine. Large intestine (colon) = remaining undigestible material o. Large colonies of bacteria: water absorbed w products of bacterial fermentation. Nutrients transported via lymph system to bloodstream or. Sent via portal vein to liver for further processing. Surplus - stored or excreted o o o. Sugar & amino acid converted to adipose/fat tissue. Limited capacity to store protein minerals, water-soluble vitamins. Difficult to diagnose - only extreme forms. Adaptive physiological responses: more efficient absorption o. Conservation of energy to reduce energy expenditure: mobilization of stores. Fat stores are the first thing your body uses to power muscle activity. Breakdown of active body tissues (muscle) to synthesize glucose (heart, liver and kidney too)
