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34 Cards in this Set
- Front
- Back
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thinking, communicating, motor movements and behavior are examples of which type of processes?
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VOLUNTARY
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breathing, BP, heartbeat and conscious are examples of which type of intrinsic processes of the brain stem?
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involuntary
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what makes up the brainstem?
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pons
midbrain medualla |
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a fibrous curtain that separates the intracranial cavity?
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tentorium
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an incomplete curtain of dura that separates the supratentorium?
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faux cerebri
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what matter covers the hemispheres
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gray matter made up of neurons
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what matter is the middle later made up of?
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white matter: myelinated axons
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what makes up the inner mass of gray matter in the brain?
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diencephalon
thalamus hypothalamus |
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name the "ridges" that compose the outer cortex of the hemispheres
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gyri/sulci
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what fissure separates the frontal lobe from the parietal?
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rolando
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what lobe of brain is responsible for the primary source of motor fxn?
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frontal lobe
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what will a lesion in the back of the frontal lobe cause?
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contralateral weakness and hyperreflexia
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what strip (sensory/motor) lies anterior to the central sulcus of rolando?
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primary motor strip
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what strip (sensory/motor) lies posterior to the central sulcus of rolando?
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primary sensory strip
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a lesion of the anterior parietal lobe will cause??
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contralateral sensory dysfunction
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what is the visual pathway?
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optic nerve--> optic chiasm -->tracts to lateral geniculate body of thalamus...
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the white matter connections that course through the temporal lobe to the parietal lobe to make their way to the visual cortex?
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meyer's loop
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a lesion of the temporal lobe visual pathway will cause?
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contralateral SUPERIOR visual field defect
"superior quadrantanopsia" |
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a lesion of the parietal lobe visual connections will cause?
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inferior visual defect
"inferior quadrantanopsia" |
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a lesion of the primary visual cortex will cause?
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contralateral complete visual field defect
"hemianopsia" |
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what is an example of a higher cortical function that is represented on only one hemisphere?
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speech dominance
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what is an example of a sensory/motor function that does not respect lobar boundaries?
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the limbic system
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what is the entry portal for short term memory and is intimately involved in learning as well as regulating mood and affect?
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the limbic system
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which lesions of the limbic system are the only ones to be symptomatic?
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bilateral lesions
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how do the cortical functions of the four lobes within one hemisphere connect with one another?
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subcortical white matter tracts
ex: superior/inf longitudinal fasciculi |
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subcortical white matter tracts connect with the brainstem and spinal cord by way of a condensation of white matter tracts called?
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the internal capsule
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very small vascular lesions in the tight condensation of white matter connections in the internal capsule can lead to ?
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severe weaknes=lacunar strokes
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what does the infratentorial compartment of the cranium contain? (posterior fossa)
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brain stem, cerebellum
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what connects the brainstem and the cerebellum?
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superior/middle/inferior cerebellar peduncles
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in a patient with nystagmus, where would you suspect a lesion?
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the inferior tonsils, inferior/lateral flocculus and nodulus (all control vestibular-ocular coordination)
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what does the reticular formation of the brain stem control?
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respiaration, heartrate, bloodpressure and consciousness
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what cranial nerves arise from the midbrain?
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III, IV
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which cranial nerves arise from the pons?
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V, VI, VII, VIII
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which cranial nerves arise from the medulla?
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IX, X, XI, XII
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