Cerebral Cortex Flashcards
cerebral cortex is embryologically derived from?
telencephalon
archicortex: component(s), how many cellular layers
hippocampus and dentate gyrus, 3 layers
paleocortex: component(s)
olfactory cortex
limbic lobe: components
cingulate gyrus, parahippocampal gyrus, hippocampus
sinuses draining cerebral cortex drain into what veins?
internal jugular veins
name the 6 cellular layers of neocortex from 1 to 6 (exterior to interior)
molecular, external granular, external pyramidal, internal granular, internal pyramidal, multiform
brodmann’s area: primary somatosensory cortex
3, 1, 2
brodmann’s area: primary motor cortex
4
brodmann’s area: primary visual cortex
17
brodmann’s area: primary auditory cortex
41, 42
brodmann’s area: Broca’s area
44, 45
anatomical name for primary somatosensory cortex
postcenrtal gyrus
anatomical name for primary motor cortex
precentral gyrus
lesion in the primary motor cortex causes what?
contralateral spastic paralysis
visuotopic organization
central visual field is most posterior, peripheral visual field is most anterior
lesion in the primary visual cortex causes what?
contralateral hemianopia
lesion in upper or lower banks of calcarine fissure causes what?
contralateral inferior or superior quadrantanopia
function of Broca’s area
motor aspect of speech
brodmann’s area: premotor cortex
6
lesion of association areas of parietal lobe on dominant (left) hemisphere causes?
astereognosis, aphasia, alexia, agraphia
lesion of association areas of parietal lobe on non-dominant (right) hemisphere causes?
spatial distortion, contralateral neglect
function of Wernicke’s area
language comprehension
lesion of Wernicke’s area on non-dominant hemisphere causes?
difficulty in comprehending emotional aspect of language
lesion to supramarginal gyrus causes?
astereognosis
lesion to angular gyrus causes?
alexia and agraphia
