Internal Carotid Arteries Flashcards
internal carotid arteries
supply each cerebral hemisphere
what does the internal carotid artery branch into
ophthalmic artery –> bifurcates into anterior cerebral and middle cerebral arteries
what does the ophthalmic artery give rise to before the bifurcation
smaller arteries
anterior choroidal
posterior communicating
surface branches of the anterior cerebral arteries supply
cortex and white matter of
–>inferior frontal lobe
–>medial surface of the frontal and parietal lobes
–>anterior corpus callosum
occlusion of the surface branches of the anterior cerebral arteries
sensory and motor deficits
penetrating branches of the anterior cerebral arteries supply
deeper cerebrum
diencephalon
limbic structures
head of caudate
anterior limb of internal capsule
what do the 2 anterior cerebral arteries get connected by
anterior communicating artery
near the entrance to longitudinal fissure
middle cerebral arteries
supply the entire lateral surface of the cortex
run in the lateral sulcus
what does the middle cerebral artery break into
smaller branches
–> penetrate the diencephalon and telencephalon
occlusion of the middle cerebral artery
particularly serious b/c there is no collateral occlusion
causes major sensorimotor deficits and aphasia
2 types of aphasia
expressive and receptive
expressive aphasia
can understand what you’re saying to them but can’t get their thoughts out
receptive aphasia
some level of difficulty understanding what you’re saying to them
what do the smaller branches of the middle cerebral artery do
penetrate the brain near origin and supply structures of diencephalon and telencephalon
what’re the smaller branches of the middle cerebral artery called
lenticulostriate arteries
