PSYC 499 Lecture Notes - Lecture 12: Ventromedial Nucleus Of The Hypothalamus, Twin, Lateral Hypothalamus
Document Summary
Claude bernard every organism has an external and internal environment. Endotherms = organisms that are able to maintain constant body temperature. I. e. eat more when deprived of food, less when force fed. Homeostasis = maintenance of internal equilibrium, internal adjustments, and a diverse set of behaviors. Thermoregulation = process b which organisms maintain a constant body temperature. Set point = level at which negative feedback tries to maintain stability. Leptin signals there are plenty of fat stores and that no more is needed; diminishes eating. Dual-center theory (in lateral hypothalamus) initiates eating; (ventromedial hypothalamus) terminates eating. Body mass index weight (kg) / height (m) squared. Morbib obesdity generally more than 100 lbs beyond their ideal weight. Genetic roots of obesity 12 pairs of adult male identical twins identical twins have similar weight gains, but fraternal twins differed in weight gain genetic component in weight gain. Dinner times and amounts of food vary around the world.