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bio psych: hypothalamus
bio psychology: the hypothalamus
14
Psychology
Undergraduate 2
12/09/2012

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Term
homeostasis
Definition
maintenance of a stable internal environment
Term
hormones
Definition
blood-borne communication molecules.
regulates balance of thirst (water/salt) hunger(nutrients/glucose) sex hormones (sex)
Term
major roles of the hypothalamus
Definition
control homeostasis, control hormones, regulate emotional arousal.
Term
neurotransmission signaling
Definition
b/w 2 neurons involves point to point communication (signal passed immediately and terminates rapidly)
Term
neuroendocrine signaling
Definition
involves the release of hormone into the blood. (signal takes longer to be received and lasts longer)
Term
amino acid derivatives
Definition
epinephrine (adrenal medulla)
Term
peptides and proteins
Definition
short and long chains of amino acids.
nueropeptide Y, leptin, insulin
Term
steroids
Definition
synthesized from cholesterol
fat soluble
testosterone, estrogen, progesterone, cortisol
Term
limbic system
Definition
involved in emotion, cognition, and motor behavior
Term
location of pituitary gland
Definition
little stalk that hangs just below the hypothalamus
Term
ventromedial nucleus (VMH)
Definition
lesions increase insulin secretion. -> get fat!
Term
hypothalamo pituitary adrenal axis (HPA)
Definition
critical regulator of our body's response to stressful stimuli.
function is to increase available energy.
Term
paraventricular nucleus (PVN)
Definition
neurons from limbic system terminate here.
Term
negative feedback
Definition
HPA axis shuts itself off when levels become too high
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