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Related Flashcards
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Cards In This Set
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Drive
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Feeling that one needs to behave in a specific way (hunger)
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Mesocorticolimbic dopamine system
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Involved in drive initiation and reduction as an aspect of motivation
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Hedonistic
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Behavior leads to pleasure, pleasure acts to reinforce behavior, may involve dopamine
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Set point
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Point of body weight that body eventually reaches, difficult to change
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Ventromedial hypothalamus
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Reduces food intake
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Lateral hypothalamus
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Increases food intake
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Arcuate nucleus
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Produces NPY, AgRP, alpha MSH, and CART
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NPY and AgRP
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Increases food intake, reduces metabolic rate by activating lateral hypothalamus and inhibiting paraventricular nucleus
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Alpha MSH and CART
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Decreases food intake, increases metabolic rate by inhibiting lateral hypothalamus and activating paraventricular nucleus/sympathetic nervous system
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Ghrelin
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Activates NPY and AgRP neurons during hunger to increase food intake
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Non-hunger reasons to eat
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Habit, boredom, social situations
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Satiety
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Stop eating
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Cholecsytokinin
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Released from small intestine during a mealEat less food
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Gastric distention
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Stomach expands Vagus nerve to nucleus of solitary tract then to hypothalamus Terminate drive to eat
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Insulin
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Released from pancreas Acts at hypothalamus to terminate drive to eatReleased while eating, when thinking of eating, and increase in blood glucose
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