PSYC 304 Chapter Notes - Chapter 12: Ad Libitum, Muscle Tone, Basal Metabolic Rate
Document Summary
Simple sugar and amino acids are carried to the liver: bile emulsifies fat. Then carried by small ducts in the duodenum into lymphatic system: remaining water and electrolytes are absorbed from waste in large intestine. Energy is delivered in three forms: 1) fat, 2) amino acids, 3) glucose. Energy is stored in three forms: 1) fats, 2) glycogen, 3) proteins. Most of the energy reserves is fat, relatively small as the other two. Glycogen stored in liver and muscle, readily converted to glucose (body"s directly utilizable source of energy) Why is fat the primary mode of energy storage: fat stores more energy than glycogen, glycogen attracts and holds substantial quantities of water. Preparatory phase; starts with sight, smell, or thought of food and ends when food starts to be absorbed into the bloodstream. Insulin level is high: lower the levels of bloodborne fuels (glucose) in anticipation of impending influx.
