Intro to Psych, Module 37

Intro to Psych, Module 37 - Hunger: Module 37 Hunger...

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Hunger: Module 37 Hunger Biological Influences of Hunger o Stomach Pangs But you can remove the stomach and still have hunger o Body chemistry Glucose in the blood is monitored by the brain stomach, intestines, and liver send information about glucose use to the brain If too much glucose, the brain signals the pancreas to secrete insulin part of the glucose is converted and stored as fat If too little glucose, hunger is triggered Hypothalamus is the hunger control-center Lateral hypothalamus signals hunger Ventromedial hypothalamus signals satiety Appetite Hormones o Hunger signals Orexin (lateral hypothalamus) Ghrelin (stomach) o Satiety signals Obestatin (stomach) PYY (digestive tract) Leptin (fat cells) o Set point – the setting of the “weight thermostat” Semi-starved rats lose weight while hunger increases and less energy is used Force-fed rats gain weight while hunger decreases and more energy is used
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This note was uploaded on 09/27/2011 for the course PSYC 2000 taught by Professor Munson during the Fall '10 term at LSU.

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Intro to Psych, Module 37 - Hunger: Module 37 Hunger...

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