PSYCH 1XX3 Lecture Notes - Lecture 9: Top Priority, Glycogen, Unit

• School: McMaster University
• Department: Psychology
• Course: PSYCH 1XX3
• Professor: Joe Kim

Document Summary

Food seeking is as much a lifestyle as it is a necessity: seeking out food-> goal directed behavior, bodies need regular nourishment to function optimally. Food consumption once dominated our everyday life: human evolutionary past-> food was scare and we were motivated by the constant need to obtain energy. In the present-> this behavior seems out of place. Smell is just as important as taste in guiding feeding behavior: feeding behaviors are guided by the interaction of taste and smell. Hunger and satiety cycles throughout the day: many signals and complex interactions between the brain and digestive system that drive feelings of hunger to consume food and drink and satiety signals. Glycogen stores help maintain blood glucose levels over the course of a day. The liver monitors glucose levels to control hunger and satiety: liver not only does it send signals to brain to trigger hunger, but it also sends signals that trigger satiety.