Term
| Which artery supplies Cingulate gyrus |
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Definition
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Term
| What symptom seen when parahippocampal gyrus is herniated |
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Definition
ipsilateral pupil dilation *PS component of oculomotor nerve is blocked and constrictor pupillae doesnt function |
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Term
Sx seen when blood supply lost to posterior corpus collosum |
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Definition
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Term
| sx seen when loss blood flow to anterior corpus callosum |
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Definition
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Term
Sx seen if both thalami are involved |
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Definition
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Term
| where is macular vision located and artery supply |
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Definition
| post aspect calcarine sulcus (occipital lobe) and middle cerebral artery |
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Term
| Tract pass through posterior limb of internal capsule |
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Definition
| corticospinal tract (contralateral spastic hemiplegia if involved) |
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Term
| Nucleus present in region which separates 2 lateral ventricles |
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Definition
| septal nuclei (septum pellucidum) |
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Term
| white matter from frontal to occipital lobe? |
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Definition
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Term
visual defect seen if involvement post cerebral artery |
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Definition
| contralateral homonymous hemianopia with MACULAR SPARING |
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Term
| Is there macular sparing if lesion of optic tract? |
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Definition
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Term
| stria terminalis terminates where |
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Definition
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Term
| stria terminalis terminate where |
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Definition
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Term
| stria terminal between 2 structures? |
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Definition
| caudate nucleus and thalamus |
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Term
| area ablated in case of basal ganglion disorder |
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Definition
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Term
| area PURPOSEFULLY stimulated in basal ganglion disorder |
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Definition
| ventral anterior nucleus of the thalamus |
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Term
condition when globus palidus surgically ablated? |
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Definition
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Term
| structure lies in roof of inf horn 3rd ventricle |
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Definition
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Term
| structure found at anterior end of tail fo caudate nucleus |
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Definition
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Term
| what traverses the hippocampal sulcus |
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Definition
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Term
structures present in hippocampal formation |
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Definition
| dentate gyrus; subiculum; hippocampus |
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Term
structure TERMINATES in mamm bodies? |
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Definition
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Term
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Definition
3 Ps pyrexia pinpoint pupil parlaysis |
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Term
| What is edingar westphal nucleus |
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Definition
| PS nerves to oculomotor nerve (midbrain- light reflex) |
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Term
Area degenerated in neurosyphilis |
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Definition
pretectal nucleus- pupillary light reflex lost accomodation reflex IN TACT |
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Term
What reflex passes through posterior commissure |
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Definition
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Term
| sense in lateral geniculate body |
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Definition
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Term
| center in ant/post cingulate gyrus |
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Definition
ant= intellectual center post- visual imagination |
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Term
| motor v sensory area and their cells |
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Definition
motor- pyramidal (agranular) sensory- granular (granular cortex) |
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Term
| connections of external granular cell layer (2) |
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Definition
| afferents to here from opp and same side |
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Term
connections of external pyramidal cell layer (3) |
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Definition
| efferents to CORTEX from this layer |
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Term
| connections of internal pyramidal cells (5) |
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Definition
| efferents from here project to neostriatum, brainstem, spinal cord |
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Term
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Definition
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Term
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Definition
| originate in 3rd layer cerebrum and give processes to reach 2nd layer of opp side cerebral hemisphere |
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Term
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Definition
| pyramidal neurons in layer 5 and inner pyramidal cell body |
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Term
What artery supplies the ready area of the brain |
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Definition
parietal cortex/prefrontal lobe- middle cerebral artery if damaged- ideational apraxia |
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Term
| part of brain dominant for attention |
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Definition
| right cerebral hemisphere |
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Term
| damage to parieto temporal lobe results in what |
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Definition
ideational (sensory) apraxia |
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Term
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Definition
condition when pt has nonfunctioning muscles due to premotor area affected- but pt NOT paralyzed *could resultf rom loss blood to this area |
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Term
| what is dominant hemisphere- even for those who are left handed |
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Definition
| 70% population = left hemisphere |
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Term
| types of fibers in cerebrum |
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Definition
commissural (connect 2 cerebral hemisphere) projecting (corticospinal- cortex to spinal cord) Association (connect same hemisphere - arcuate fasciculus) |
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Term
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Definition
| L hand apraxia, alexia without agraphia, agraphia of the L hand, astereognosia, inability to read L hemifield |
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Term
| Gerstmann syndrome- where lesion |
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Definition
| angular gyrus- inf parietal lobe |
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Term
| Where is NONREM sleep switch |
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Definition
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Term
| Ventral lateral preoptic nucleus neurons? |
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Definition
| GABAergic neurons inhibit histamine to lead to nonREM sleep |
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Term
| lesion lateral nucleus of tuberoinfundibular area |
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Definition
| emaciation- loss of appetite |
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Term
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Definition
| hormone produced by fat to stimulate OB receptors in hypothalamus- produce A-MSH- DEC APPETITE |
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Term
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Definition
| ant hypothalamus- under PS control |
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Term
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Definition
| Post hypothalamus- Sympathetic control |
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Term
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Definition
| lateral hypothalamic area- induce wakefulness |
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Term
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Definition
sham rage syndrome- VIOLENT cut post hypothalamus- DOCILE and abolish rage |
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Term
| When is Bromocryptine used |
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Definition
| parkinsonism, prolactinoma dopoamine agaonist act on D2 receptors selectively |
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Term
| what bundle pass through lateral zone hypothalamus |
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Definition
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Term
| what makes medial/lateral zone differentiation of hypothalamus |
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Definition
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Term
| pathway begins in Amygdala |
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Definition
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Term
| mossy fibers are what type of cells |
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Definition
| granular celsl of hippocampus |
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Term
| fornix lies between 2 areas |
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Definition
| mammillary body and hippocampus |
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Term
fissure between sup surface thalamus and fornix |
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Definition
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Term
| what difvides thalamus into 3 nuclei |
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Definition
| internal medullary lamina |
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Term
| what tracts terminate in ventral posteriolateral nucleus of thalamus |
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Definition
| medial and lateral lemniscus |
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Term
| tract terminate in vetnral posteromedial nucleus of thalamus |
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Definition
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Term
| pain and temp sensation from head lies in what nucleus? |
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Definition
| ventral posteromedial nucleus of thalamus |
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Term
does glaucoma cause papiledema? |
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Definition
| no- causes optic cupping- cup of optic disc exaggerated and cupping increased by degeneration of optic nerve (caused by papilledema too) |
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Term
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Definition
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Term
| what vision lies in nasal retina |
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Definition
| temporal vision- this vision crosses..... |
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Term
| P - pathway / M pathway cell size |
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Definition
P- small - acuity of vision (cones) M- large- Movement (RODS) |
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Term
| lesion of hypothalamospinal tract |
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Definition
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Term
| neuors responsible for dilatation pupil |
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Definition
| posterior part of hypothalamus; pregang symp neuron in lat horn T1 |
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Term
| structures which light must pass before reaching the retina |
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Definition
| cornea- aqueous humor, lens, vitreous humor |
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Term
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Definition
inverse of focal length lens- 12 |
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Term
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Definition
| hardening of lens "after 40 years" |
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Term
| rods/cones in fovea region |
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Definition
| rods absent; cones concentrated |
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Term
| Why is macular area spared when visual cortex damaged |
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Definition
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Term
1st sign inc oculomotor pressure |
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Definition
| pupil dilation- bc PS nerves compressed and constriction cant occur |
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Term
| what are limbs of corneal reflex |
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Definition
ascending aff limb- nasocilliary branch trigeminal descending/efferent - facial nerve |
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Term
| optic disc lies in what quadrant |
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Definition
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Term
| which loop extend into temporal lobe |
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Definition
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Term
| Sx seen if post cerebral artery damaged |
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Definition
| peripheral vision lost with macular sparing due to MCA |
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Term
| 4 areas where contralateral superior homonymous quandrantonopia is seen |
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Definition
L- lower retina L- lat part Lat geniculate body L-loop of meyer L- lower lip of calcarine sulcus |
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Term
| Drugs given in Parkinsonism |
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Definition
| Anticholinergic; L dopa; MAOI; carbadoba with L dopa |
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Term
| external parts in limbic lobe |
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Definition
parahippocampal; paraterminal; subcollosal; cingulate gyrus |
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Term
| Herpes has tropism for what lobe? |
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Definition
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|
Term
| Granular cells found in only one nucleus |
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Definition
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|
Term
| alveolar pathway surpasses what nucleus |
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Definition
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Term
| auditory impulses begin in what cell |
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Definition
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