PSY290H1 Study Guide - Final Guide: Adrenal Cortex, Congenital Adrenal Hyperplasia, Hallucination
Document Summary
Energy and nutrition (need: to gain energy and molecular building blocks for the functioning, growth, and maintenance of the body-metabolism, pleasure (want)-reward seeking. Eating behavior is linked to both energy metabolism and reward seeking. Three phases of energy metabolism: cephalic (head) and digestive phase, absorptive phase, fasting phase. Begin with sight, smell, or thought of food-prepares body. Ends when digested food starts to be absorbed into bloodstream. *vagus nerve- parasympathetic activation of gastric motility & gastric juice secretion. Food contains carbohydrates, proteins, fats, vitamins, and minerals. During digestive phase, food are broken down to three types of molecules that can be used by our body cells: glucose (from carbohydrates, amino acid (from protein, fatty acid (from fats) The mouth is the beginning of the digestive system. Mouth: breaking up food by chewing, digestion by saliva (complex carbohydrates to simple sugars) Stomach: digestion by hydrochloric acids and pepsin (proteins to amino acids)
