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22 Cards in this Set

  • Front
  • Back
describe the arterior supply to the cerebral cortex
ACA, MCA, PCA, ant comm, post comm (Cicle of Willis)
describe the venous drainage of the cerebral cortex
superior saggital sinus=>inferior saggital sinus=>straight sinus=>tranverse sinus=>sigmoid sinus=>internal jugular veins
list the 6 layers of the neocortex
1.molecular
2. external granule
3. external pyramida
4. internal granular -input from thalamus
5. internal pyramidal-Betz cells, output
6. multiform layer
in which layer of the neocortex would you expect to find association and commisural fibers but no projection fibers
layer 2: external pyramidal layer (note that the multiform layer contains these fibers but has has projection and corticothalamic fibers)
in which layer of the neocortex would you expect to find the majority of the input thalamocortical fibers of the ventral tier
layer 4: internal granular
In which layer of the neocortex would you expect to find cortico fibers that project to lower motor areas (betz cells)
layer 5, internal pyramidal
(hint roman numberal V looks kinda like an upside down pyramid, pyramidal cells project down to LMN)
what is the functional unit of the cerebral cortex
colums and modules-each column extends through the 6 layers that share similar functions, functional columns for modules in various cortocal areas, the columns are interconnceted within the same and between hemispheres
Primary somatosensory-anatomic and bordmann's
1 somatosensory=postcentral gyurs, 3,1,2
Primary motor-anatomic and bordmann's
1 motor=precentral gyrus, 4
primary visual-anatomic and bordmann's
1 visual=cuneus and lingual gyrus, area 17
auditory-anatomic and bordmann's
tranverse gyrui of Heschl, 41,42
brocas-anatomic and bordmann's
inferior frontal gyrus, 44,45
which areas of the thalamus connect to the post central gyrus
The post central gyrus is the primary sensory cortex (3,1,2)
VPM, VPL these nuceli are the terminations of the dorsal column/ medial lemniscus/ spinothalamic and trigeminal systems that convery fine touch and pain/temp from the body and face
which areas of the thalamus connect to the precentral gyrus
motor relays, VA-input from globus pallidus of BG, VL-input from dentate n. of cerebellum
Which areas of the thalamus project to the cuenus and lingual gyri
lateral geniculate body-input from the retinal ganglion cells
the cuneus and lingual gyri are the primary visual cortex
Which areas of the thalamus project to the transverse gyri of heschel
medial geniculate n. - input from inferior colliculus

The T.G. of H (41,42) is the primary auditory cortex
Which areas of the thalamus project to teh POT cortex
pulvinar, LP-sensory integration
which areas of the thalamus project  to the prefrontal cortex
medial dorsal n. function in executive and limbic fxns
which areas of the thalamus project to the cingulate gyrus
anterior nuclear gorup -limbic, (mamillary=> cingulate, papez circut)

and lateral dorsal-emotional expression, (cingulate=>cingulate)
tumors in the cerebral cortex are usually of which cell origin
glial
lesion of the supramarginal gyrus results in
asteroegnosis-a portion of the parietal lobe, inability to tell the identity of an object by feel
lesion of the angular gyrus reslts in
alexia and agraphia