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Hypothalamus- hormones and behavior (hypothalamus (three parts (lateral…
Hypothalamus- hormones and behavior
hypothalamus
pituitary gland
three parts
lateral region
medial forebrain bundle (MFB)
consists of many dopamine-containing fibers
plays a role in eating and sex
plays a role in addiction and impulsivity
medial region
periventricular region
neurons produce peptides
transported to terminals in posterior pituitary
Activation of neurons causes them to initiate the release of peptides stored in terminals by sending AP
released peptides are picked up by cappilaries
carried to bloodstream where they can manifest their effects
effects depend on receptors they bind to
prioduces releasing hormones
are transported via bloodstream to anterior pituitary
glandular tissue of anterior pituitary produces hormones
hormonal activity of hypothalamus is controlled in three ways
feedback loops
receptors in hypothalamus check the hormonal levels and either increase, decrease the release of hormones or nothing
neural control
regulated by other brain structure
limbic system or frontal lobes
influence by either inhibiting or exciting the hypothalamus
experiential response
change by experience
very adaptive
ex increase in oxytocin for babys
Hypothalamus also engaged in producing survival or reward related behavior
displaying fear, eating drinking
controls
major function
forms connection between parts of brainstem and parts of limbic system
peptides that influence the release of hormones