PSYC 280 Study Guide - Proopiomelanocortin, Glycerol, Binge Eating

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 280
• Professor: John Reynolds

Document Summary

Obligatory losses: requires us to gain and conserve heat, water, and food. Mammals=endotherms: we make our own heat from inside our body using metabolism and muscular activities (if muscular activity isn"t enough, we shiver) [ectotherms-get heat outside body by relying on anaerobic muscular activity from chemical reactions that require o2. Your set zone can elevate producing a fever to fight help body fight off an infection but if too hot, proteins start to lose their correct shape, link together, then malfunction: denaturing/cooking. A high fever can cause brain centers that regulate heart rate and breathing to die, and kill the personif too cool, chemical reactions in body slow down and ice crystals may disrupt cellular membranes and killing the cells. Hypothalamus sense and controls body temp; 2 sites control 2 separate thermoregulatory systems. Preoptic area (poa): respond to cold like shivering, increased thyroid activity, metabolism of brown fat, and constriction of blood vessels.