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12 Cards in this Set
- Front
- Back
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Posterior area: Mammillary body
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<receives input from hippocampas formation via fornix and projects to anterior nucleus of thalamus>
-learning and memory -contains hemorrhagic lesions in Wernicke's encephalopathy |
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Posterior area: Posterior nucleus
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-Thermal regulation (conservation of heat)
-stimulates sympathetic nervous system |
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Tuberal area: Dorsomedial nucleus
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-stimulation results in obesity and savage behavior
(hypocretin/orexin= wakefulness; damage= narcolepsy) |
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Tuberal area: Ventromedial nucleus
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-satiety center
-destruction results in obesity and savage behavior [sexually dimorphic in females] <leptin + grehlin> |
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Leptin
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produced by adipose cells, binds to ventromedial nucleus to signal the brain that you are full
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Grehlin
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produced by adipose cells and the arcuate nucleus that can also bind to the ventromedial nucleus to increase food intake and fat mass
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Tuberal area: Arcuate nucleus
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-produces hypothalamic releasing factors-neuropeptide Y that influences hunger
-secretes and is activated by Grehlin -contains DOPA-ergic neurons (dopamine to inhibit prolactin release from the pituitary gland) |
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Anterior area: Anterior nucleus
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-Thermal regulation (heat dissipation)
-stimulates parasympathetic nevous system -destruction results in hyperthermia and anhydrosis |
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Anterior area: Paraventricular and supraoptic nuclei
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-regulates water balance
-Produces ADH and oxytocin <projects to autonomic nuclei of brainstem and spinal cord> -destruction results in (of ADH) diabetes insipidus=polyuria causing dehydration and thirst |
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Anterior area: Suprachiasmatic nucleus
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-receives input from retina
-controls circadian rhythm |
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Preoptic area
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-contains sexually dimorphic nucleus (larger in males here)
-regulates release of gonadotropic hormones <center of typical male behavior> |
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Lateral area: Lateral nucleus
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-stimulation induces eating
-regulates drive states for pleasure and reward -destruction results in starvation |
