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psych U8M38
hunger motivation
Question | Answer |
---|---|
lateral hypothamalus | tells you to eat |
ventromedial hypothalamus | tells you not to eat |
glucostatic hypothesis | if your blood glucose drops, your brain triggers hunger, and vice versa. |
lipostatic hypothesis | low levels of leptin triggers hunger and vice versa. |
ghrelin | secreted by the stomach--"I'm hungry" |
orexin | secreted by hypothalamus; hunger triggering |
leptin | protein hormone secreted by fat cells |
PYY | not hungry signal |
basic metabolic rate | how much energy we use to maintain our body when at rest |
what happens to the basic metabolic rate with decreased food intake? | the rate drops, as well as our energy expenditure |
osmoreceptors | if intracellular water levels are low, they release antidiuretic |
volumetric receptors | if extracellular H2O levels are low, angiotension is released to stimulate thirst. |
antidiuretic hormone | reduces urine and increases thirst; eliminated when H2O restored |
angiotensin | stimulates thirst |
obesity | being 30% over normal body weight |
social/cultural influence on the motivation to eat | culture-specific foods |
situational influence on the motivation to eat | eating with friends make you eat more |
two factors that contribute to obesity | the parent's weight (genetic), sleep loss |
significant obesity increases what types of risks? | diabetes, HBP, heart disease, gallstones, arthritis |