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Nuero-Anatomy Cerebrum (A)
Nuero-Anatomy Cerebrum (A)
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37 Terms
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the three functions of meninges
protection, isolation, metabolic support
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meningeal linings of cerebrun
dura, arachnoid, and pia mater
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Diagnosis by a spinal tap or lumbar puncture
meningitis
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separates cerebellum from occipital lobes of cerebral hemispheres; separates cerebellum from cerebrum
tentorium cerebelli
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between two cerebellar hemispheres; separates left and right cerebellar hemispheres
falx cerebelli
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extends into longitudinal fissure between 2 hemispheres; separates cerebral hemispheres
falx cerebre
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covers the sella turcica and pituitary gland
diaphragma sella
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most superficial of the meningeal lining
dura mater
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deep to the dura mater, much thinner middle layer overlaying the brain
arachnoid mater
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the thinnest and most closely adherent layer of the meninges (deepest)
pia mater
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CSF
cerebrospinal fluid
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the circulatory system for CSF
ventricular system
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volume of CSF
125 ml
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located in the frontal and parietal lobes
anterior horn
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extends into the occipital lobe
posterior horn
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in the temporal lobe
inferior horn
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narrow space between cerebral hemispheres; bounded by structures comprising diencephalon
third ventricle
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interconnects the two hemisphere of the thalamus
massa intermedia
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third ventricle drains into the 4th ventricle by way of the
cerebral aqueduct
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bounded by cerebellum behind pons & medulla in front and is continued below into central canal of spinal cord
fourth ventricle
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outer surface of brain (2-4 mm thick)
cerebral cortex
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a fold
gyrus
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a depression
sulcus
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a particularly deep depression
fissure
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divides the hemispheres; goes as deep as the corpus callosum
longitudinal fissure
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divides the cerebrum from the cerebellum (tentorium cerebelli fits in here)
transverse fissure
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representative of the distribution of motor and sensory innervation in the pre and post central gyri
homunculus
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largest of the lobes, runs from the frontal pole back to the central sulcus/fissure of rolando
frontal lobe
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site of auditory reception, clearly identifiable lobe posterior to the lateral fissure
temporal lobe
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anterior point of temporal lobe
temporal pole
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responsible for receiving visual stimulation, primarily associated with vision and its related functions (ex: reading)
occipital lobe
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runs posteriorly from central sulcus back to a poorly defined border in the region of the angular gyrus
parietal lobe
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revealed by deflecting temporal lobe; can be exposed by separating the “lips” of the lateral fissure; lies very deep to the rest of the crebrum
insular lobe
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lips of the lateral fissure
operculum
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two most important gyri in speech
precentral and postcentral
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anterior to central sulcus, **motor** functions
precentral gyrus
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posterior to central sulcus, **sensory** functions
postcentral gyrus