ESS 3 Lecture Notes - Lecture 4: Human Body, Pepsin, Glycerol
Document Summary
Physiologic drive for food that occurs when our body sense that we need to eat. A variety of foods could satisfy you. Aroused when environmental cues stimulate your senses triggering pleasant emotions and memories. People experience appetite in the absence of hunger. Prompt to eat is given by the hypothalamus in the brain. Hypothalamus triggers feelings of hunger or satiation (fullness) by signals from 3 signals: nerve cells, hormones (messengers, the amount & type of food we eat. Nerve cells lining the stomach and small intestine detect changes in pressure according to whether the. Nerve cells relay the info to the hypothalamus which prompts you to feel hunger organ is empty or full. Chemicals produced in specialized glands that travel in the bloodstream to target organs in other parts of the body. Insulin and glucagon are two hormones responsible for maintaining blood glucose levels secreted by. Glucose = body"s most readily available fuel supply.
