ESS 3 Lecture Notes - Lecture 3: Digestive Enzyme, Blood Sugar, Chyme
13 Oct 2016
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Document Summary
The physiologic drive for food that when our body senses that we need to eat. It is aroused when environmental cues stimulate your senses triggering pleasant emotions and memories. People experience appetite in the absence of hunger. This prompt to eat is given by the hypothalamus in the brain. The hypothalamus triggers feelings of hunger or satiation (fullness) by signals from 3 sources: nerve cells, hormones. 3. the amount and type of food we eat. The nerve cells lining the stomach and small intestine detect changes in pressure according to whether the organ is empty or full. The nerve cells relay the information to the hypothalamus which prompts you to feel hunger. Hormones: chemicals produced in specialized glands that travel in the bloodstream to target organs in other parts of the body. Hormones are chemical messenger that are secreted into the bloodstream by one of the many glands of the body.
