Hypothalamus Chart - Dorsomedial hypothalamic Nucleus...

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Page 1 Nucleus Input Output Responsibility Hypothalamus arteries are inferior and superior hypophyseal arteries off of internal carotid Lateral Hypothalammic Nucleus Via MFB Via MFB Causes you to eat; **Lesion = anorexia **Stimulation = overeating Ventromedial Hypothalamic Nucleus via MFB via MFB Satiety (when to stop eating). **Lesion = overeat **Stimulate = stop eating Suprachiasmatic Nucleus Retinal input about light Sympathetic system; at night Internal clock; Circadian rhythms stimulates pineal to rls melatonin Anterior Hypothalamic Nucleus Autonomics Vasodilate to dissipate heat (Anterior = A/c) **lesion = hyperthermic Posterior Hypothalamic Nucleus Heat production Heat production: shivering, vasoconstrict, thyroid gland; **lesion = hypothermic
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Unformatted text preview: Dorsomedial hypothalamic Nucleus Causes Aggression; stimulate it and get rage and attack in cats; lesion it and get passive behavior Mamillary nucleus fornix mammilothalamic tract relay between hippocampus and thalamus; works with memory Supraoptic and paraventricular nuclei synthesize oxytocin and vasopressin, transported down via supraopticohypophyseal tract to terminals artery for neuroendocrine regulation Paraventricular nucleus sympathetic and parasympathethic ***Lesion will cause ipsilateral Horner's syndrome Preoptic and arcuate hypothalamic nuc. physeal artery posterior pituitary release into inferior hypophys anterior pituitary axons terminate on superior hypo-...
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  • Spring '08
  • BAles
  • hypothalamic nucleus, Anterior Hypothalamic Nucleus, Dorsomedial hypothalamic Nucleus, Nucleus Suprachiasmatic Nucleus

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