1st AID USMLE Step 1 Neurology and Psychiatry Basal Brain Structures
Terms
undefined, object
copy deck
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thirst and water balance
which hypothalamic nucleus? - supraoptic nuc
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hunger
which hypothalamic nucleus - lateral nucleus
- result of destruction of lateral nucleus of hypothalamus
- anorexia and starvation
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satiety
which hypothalamuc nucleus? - ventromedial nuc
- result of destruction of ventromedial nucleus of hypothalamus
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hyperphagia and obesity
lesion to ventromedial nucleus -> u grow VENTRALLY and MEDIALLY - two hypothalamic nuclei which regulate appetite
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lateral=hunger
ventromedial=satiety -
parasympathetic regulation
which part of hypothalamus - anterior hypothalamus
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sympathetic regulation
which part of hypothalamus - posterior hypothalamus
- circadian rythms governed by what nucleus of hypothalamus
- suprachiasmatic
- which part of hypothalamus regulates heat conservation and production when cold
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posterior hypothalamus
no posterior hypothalamus -> poikilotherm (cold blooded) - part of hypothalamus which coordinates cooling when hot
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anterior hypothalamus
A/C = anterior cooling -
sexual urges and emotions
which hypothalamus nucleus? - septal nucleus
- what is the result of destruction of septal nucleus of hypothalamus
- rage
- thalamus function
- relay for ascending sensory information that ultimately reaches the cortex
- inputs of posterior pituitary
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supraoptic (ADH) and peraventricular (oxytocin) nuclei
oxytocin; oxys = quick; tocos = birth - hormone secreted (via neurohypophysis) of supraoptic nucleus
- ADH
- hormone secreted (via neurohypophysis) of paraventricular nucleus of hypothalamus
- oxytocin
- sensory input to lateral geniculate nucleus of thalamus
- visual
- sensory input to medial geniculate nucleus of thalamus
- auditory
- sensory input to ventrap posterior nucleus, lateral part (VPL) of thalamus
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body sensation
--proprioception, pressure, pain, touch, vibration via dorsal columns and spinothalamic tract - sensory input to ventral posterior nucleus, medial part (VPM)
- facial sensation via CNV
- function of ventral anterior/lateral nuclei of thalamus (VA/VL)
- motor
- motor nuclei of thalamus
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ventral anterior, ventral lateral
VA, VL - visual nucleus of thalamus
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lateral geniculate nucleus
Lateral for light - auditory nucleus of thalamus
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medial geniculate nucleus
Medial for Music - body sensation nucleus of thalamus
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ventral posterior nucleus, lateral part
VPL - facial sensation nucleus of thalamus
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ventral posterior nucleus, medial part
VPM - limbic system function
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responsible for Feeding, Fighting, Feelings, Fright, and Sex
The Famous Five F's - Parkinsons disease due to decreased input from the ____
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substantia nigra
*stims direct
*inhibs indirect - Which extrapyramidal motor pathway facilitates movement
- Direct pathway
- Which extrapyramidal poathway inhibits movenment
- indirect pathway
- The direct extrapyramidal motor pathway function
- facilitates movement
- The indirect extrapyramidal motor pathway function
- inhibits movement
- DIRECT extrapyramidal motor pathway effect on GPi
- inhibits
- Outline the INDIRECT extrapyramidal motor pathway from substantia nigra pars compacta to motor cortex
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*net inhibition of thalamus from uninhibited GPI
putamen, indirect pathway, inhibits
GPe inhibits
(STN which stims->) GPi inhibits
Thalamus stimulates
motor cortex