PSYCH 360 Lecture Notes - Lecture 27: Blood Sugar, Glycogen, Negative Feedback
Document Summary
Sensor detects that there is a high amount of blood sugar; insulin (made and released by pancreas) will take the blood sugar out of the blood and to cells that need it; bringing blood sugar back down. Excess will be made into glycogen for storage in the liver (glucagon) converts glycogen back into glucose: negative feedback system; too high: insulin; too low; glucagon. Insulin: can be released just by sensory cues associated with food (can be anticipated, walking by a restaurant, seeing a cake, etc. ; hypothesis (correlation does not equal causation: also sitmulates gh (growth hormone) release, melanocortins (amsh, made from pomc. Its levels low before eating: leptin, fat cells produce leptin; more fat more leptin, defects in leptin signaling or the leptin receptor gives the brain the false report that there"s not enough body fat; so the individual overeats.
