13: Feeding

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21 Terms

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What are the different satiety hormones
leptin, insulin, PYY
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insulin
produced in pancreas
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leptin
produced in fat cells
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PYY
produced in intestines
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what are the hunger hormones
orexin, ghrelin, NPY, and AgRP
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orexin
hypothalamus
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ghrelin
stomach
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NPY
hypothalamus
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AgRP
hypothalamus b
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how does glucose turn into glycogen?
glycogenesis (insulin)
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how does glycogen revert back to glucose?
glycogenolysis (glucagon)
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Where are alpha and beta cells found
Pancreas, islet of Langerhans
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Alpha cells
makes glucagon
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beta cells
makes insulin
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which LHA hormone is primarily responsible for eating?
orexin
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bilateral lesion of LMH
suppress appetite, lose weight
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what is the VMH
satiety center of brain
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bilateral lesion of VMH
overeating, obesity, overproduction of leptin
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what is the ob/ob gene?
body able to produce leptin
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Why do obese people have higher levels of leptin
more fat cells releases more leptin, receptors are desensitized
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arcuate nucleus of hypothalamus
leptin and ghrelin receptors