Hunger, Eating and Health - Physiological research on Hunger and Satiety
3 important questions on Hunger, Eating and Health - Physiological research on Hunger and Satiety
Pinel gives 5 reasons why he thinks that reduction in blood glucose before a meal is not enough support tothe glucostatic theory. What are these 5 reasons?
1. When a food has a high PI-value, people will still eat it although no drops in glucose levels are detected.
2. Drops in blood glucose are a reaction on eating a meal, not the other way around.
3. If an expected meal is not served, glucose levels will return to their homeostatic level.
4. Glucose levels around the CNS stay relatively constant, even if there is a drop in blood-glucose levels.
5. Pre-meal injected glucose does not suppress eating, and insulin injections does not induce eating.
What was the finding of Cannon and Washburn's experiment where a balloon was swallow?
Hunger is the feeling of contractions caused by an empty stomach, whereas satiety is the feeling of stomach distention.
How was the use of peptides involved in eating behavior discovered?
By implanting an extra stomach into rats, with intestine. A signal of satiety was given to the brain, but it could not go through the blood or be a nutrient - it had to be... PEPTIDES YAY!
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