March 13 - 1 Weight Management QuickTime L and a TIFF...

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Unformatted text preview: 1 Weight Management QuickTime L and a TIFF (Uncompressed) dec are needed to see this pic 2 The Physiology of Hunger Stomach contractions (pangs) send signals to the brain making us aware of our hunger. 3 Stomachs Removed Tsang (1938) removed rat stomachs connected the esophagus to the small intestines and yet the rats felt hungry (and ate food). 4 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 5 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 6 Hypothalamus & Hormones Hypothalamus monitors a number of hormones that are related to hunger. Hormone Tissue Response Orexin increase Hypothalamus Increases hunger Ghrelin increase Stomach Increases hunger Insulin increase Pancreas Increases hunger Leptin increase Fat cells Decreases hunger PPY increase Digestive tract Decreases hunger 7 The Genetic Factor Identical twin studies reveal that body weight has genetic bases....
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March 13 - 1 Weight Management QuickTime L and a TIFF...

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