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17 Cards in this Set
- Front
- Back
Preoptic nucleus
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regulate anterior pituitary (axons terminate on superior hypothalamic artery in medial eminence)
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suprachiasmatic nucleus
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Regulate circadian rhythms
in: retinohypothalamic fibers (info re presence/absence of light) out: sympathetics to pineal -> melatonin in dark |
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supraoptic nucleus
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neuroendocrine regulation in POSTERIOR pituitary
via supraopticohypophyseal tract: transports oxytocin & vasopressin |
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Posterior pituitary input
vasculature |
paraventricular nucleus & supraoptic nucleus
aka Pars nervosa receives Inf. Hypophyseal artery, puts out hypophyseal vein |
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Anterior pituitary input & vasculature
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Preoptic & Arcuate nuclei
Axons terminate on superior hypophyseal artery in medial eminence Vasc: superior hypophyseal artery, hypothalamohypophyseal portal veins |
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Arcuate nucleus
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neuroendocrine regulation via anterior pituitary (axons terminate on superior hypothalamic artery in medial eminence)
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Paraventricular nucleus
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neuroendocrine regulation in POSTERIOR pituitary & Regulates autonomics
lesion -> Horner's syndrome |
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Anterior pituitary secretion steps
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1)Preoptic & Arcuate Neurons synth. Either releasing or inhibiting hypophyseal regulating hormones
2) Transport down axon to MEDIAN EMINENCE (assoc. w/ capillaries) 3) Secrete into hypothalamo-hypophyseal portal circ. (1st set of capillaries from sup. Hypophyseal aa) 4) Portal vv carry to anterior pituitary -> affect pituitary secretory cells 5) Anterior pituitary endocrine cells secrete into systemic circulation |
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Lateral hypothalamic nucleus functions
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appetite: stim -> hyperphagia
lesion -> anorexia sends & recieves via MFB "Lateral gets you lazy & fat" |
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Ventromedial hypothalmic nucleus functions
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satiety: stim -> anorexia
lesion -> hyperphagia & aggression |
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Nuclei regulating eating
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Lateral hypothalamic nucleus: eating ("lateral gets you lazy & fat")
Ventromedial hypothalamic nucleus: stim -> anorexia |
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Anterior hypothalamic nucleus
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temperature regulation: heat dissipation
"Posterior Produces heat while Anterior gets it Away" |
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Posterior hypothalamic nucleus
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temperature regulation: heat production
"Posterior Produces heat while Anterior gets it Away" |
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Temperature regulation nuclei
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Anterior & posterior hypothalamic nuclei
"Posterior Produces heat while Anterior gets it Away" |
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Dorsomedial hypothalamic nucleus
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Aggression (sham-aggression in cats)
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Mammillary nucleus
(In, out, func) |
in: fornix
out: MTT to Ant. Thalamic nucleus (relay between hippocampus & thalamus) func: limbic (including memory) |
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Lesion of this nucleus leads to Horner's Syndrome
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Paraventricular nucleus
neuroendocrine regulation in POSTERIOR pituitary & Regulates autonomics |