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17 Cards in this Set

  • Front
  • Back
Preoptic nucleus
regulate anterior pituitary (axons terminate on superior hypothalamic artery in medial eminence)
suprachiasmatic nucleus
Regulate circadian rhythms
in: retinohypothalamic fibers (info re presence/absence of light)
out: sympathetics to pineal -> melatonin in dark
supraoptic nucleus
neuroendocrine regulation in POSTERIOR pituitary
via supraopticohypophyseal tract: transports oxytocin & vasopressin
Posterior pituitary input
vasculature
paraventricular nucleus & supraoptic nucleus
aka Pars nervosa
receives Inf. Hypophyseal artery, puts out hypophyseal vein
Anterior pituitary input & vasculature
Preoptic & Arcuate nuclei
Axons terminate on superior hypophyseal artery in medial eminence
Vasc: superior hypophyseal artery, hypothalamohypophyseal portal veins
Arcuate nucleus
neuroendocrine regulation via anterior pituitary (axons terminate on superior hypothalamic artery in medial eminence)
Paraventricular nucleus
neuroendocrine regulation in POSTERIOR pituitary & Regulates autonomics
lesion -> Horner's syndrome
Anterior pituitary secretion steps
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
Lateral hypothalamic nucleus functions
appetite: stim -> hyperphagia
lesion -> anorexia
sends & recieves via MFB
"Lateral gets you lazy & fat"
Ventromedial hypothalmic nucleus functions
satiety: stim -> anorexia
lesion -> hyperphagia & aggression
Nuclei regulating eating
Lateral hypothalamic nucleus: eating ("lateral gets you lazy & fat")
Ventromedial hypothalamic nucleus: stim -> anorexia
Anterior hypothalamic nucleus
temperature regulation: heat dissipation
"Posterior Produces heat while Anterior gets it Away"
Posterior hypothalamic nucleus
temperature regulation: heat production
"Posterior Produces heat while Anterior gets it Away"
Temperature regulation nuclei
Anterior & posterior hypothalamic nuclei
"Posterior Produces heat while Anterior gets it Away"
Dorsomedial hypothalamic nucleus
Aggression (sham-aggression in cats)
Mammillary nucleus
(In, out, func)
in: fornix
out: MTT to Ant. Thalamic nucleus (relay between hippocampus & thalamus)
func: limbic (including memory)
Lesion of this nucleus leads to Horner's Syndrome
Paraventricular nucleus
neuroendocrine regulation in POSTERIOR pituitary & Regulates autonomics