PSYCH 1XX3 Quiz: Web Module.docx
Document Summary
Hunger and satiety: signals and complex interactions between brain and digestive system that drive feelings of hunger to consume food and drink, satiety signals lead you to stop consumption. Liver and pancreas help buffer extreme swings in blood glucose levels: time since feast increases and cycle continues, glycogen reserves in the liver will decrease, status signal is sent to the brain, pancreas secretes insulin. Liver breaks down glycogen into glucose: glucose and glycogen levels get too low and you will feel hungry. In the time between night and the next morning glycogen stores are depleted: eating for breakfast increases blood glucose levels for now and helps replenish glycogen stores for later. Npy: another hunger cue came from neuropeptide y/npy, high levels of npy activity in the hypothalamus, associated with increased appetite, food seeking behaviours, npy affects feeding behaviour in fish, reptiles, birds and other non-human mammals.
