Myers37 - Hunger Module 37 The Physiology of Hunger Stomach...

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Unformatted text preview: Hunger Module 37 The Physiology of Hunger Stomach contractions (pangs) send signals to the brain making us aware of our hunger. Stomachs Removed Tsang (1938) removed rat stomachs connected the esophagus to the small intestines and yet the rats felt hungry (and ate food). Glucose: C 6 H 12 O 6 Glucose level in the blood is maintained. Insulin decreases glucose in blood making us feel hungry. Glucose Molecule Glucose & Brain Levels of glucose in the blood are monitored by receptors (neurons) in the stomach, liver, intestines, they send signals to the hypothalamus in the brain. Rat Hypothalamus Hypothalamic Centers Lateral hypothalamus (LH) brings on hunger (stimulation). Destroy it and the animal has no interest in eating. Reduction of blood glucose stimulates orexin in LH which leads to ravenous eating in rats. Hypothalamic Centers Ventromedial hypothalamus (VMH) depresses hunger (stimulation). Destroy it and the animal eats excessively....
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This note was uploaded on 02/21/2012 for the course PSYCH 101 taught by Professor Ennis during the Winter '09 term at Waterloo.

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Myers37 - Hunger Module 37 The Physiology of Hunger Stomach...

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