blood supply Flashcards
regions of middle cerebral artery
superior, inferior, deep
Infarct left MCA superior
right face and arm weakness, broca’s aphasia
infarct left MCA inferior
Wernicke’s aphasia, right vision defect, right face and arm sensory loss, patients seem confused or crazy
infarct left MCA deep
right pure motor hemiparesis
infarct left MCA stem
right hemiplegia, right hemianesthesia, right homonymous hemianopia, global aphasia
hemianopia
lose sight in half of vision field
infarct right MCA superior
left face and arm weakness, left hemineglect
infarct right MCA inferior
left visual field and somatosensory deficits
infarct right MCA deep
left pure motor hemiparesis
Infarct right MCA stem
left hemiplegia, left hemianesthesia, left hemianopia,
infarct left ACA
right leg weakness, abnormal grasp reflex, frontal lobe behavioral abnormalities, transcortical aphasia
infarct right ACA
Left leg weakness, abnormal grasp reflex, frontal lobe behavioral abnormalities
infarct left PCA
right hemianopia, alexia, can cause aphasia, right hemisensory loss and right hemiparesis
alexia
lose ability to read
agraphia
impairment or loss of previous ability to write
infarct right PCA
left hemianopia, may cause left hemisensory loss and left hemiparesis
terminal arterial branches are in
the subarachnoid space
ICA branch from _ and enter via _
common carotid, carotid canal
Vertebral arteries branch from _ enter via _ and merge to from unpaired _
subclavian, foramen magnum, basilar artery
Branches of ICA
ophthalmic, posterior communicating, anterior choroidal, anterior cerebral (ACA), middle cerebral (MCA)
Branches of ACA
anterior communicating, medial striate, pericallosal, callosomarginal
vertebrobasilar system
vertebral artery, basilar artery, PCA
branches of PCA
cortical branches, deep branches
branches of vertebral artery
anterior spinal, posterior inferior cerebellar (PICA)
branches of basilar artery
pntine arteries, anterior inferior cerebellar arteries (AICA) superior cerebellar
circle of willis is formed by
anterior communicating artery, anterior cerebral arteries, internal carotid arteries, posterior communicating arteries, posterior cerebral arteries
dural venous sinuses
superior sagittal sinus, inferior sagittal sinus, straight sinus, transverse, superior petrosal, inferior petrosal, occipital, sigmoid, cavernous, intercavernous sinus, sphenoparietal,
ventricles of the brain
lateral, interventricular foramen, third, aqueduct of the midbrain, fourth
flow of CSF
lateral to 3rd to 4th to subarachnoid space to dural sinus
what is the main site of CSF absorption
arachnoid granulations
communicating hydorcephalus
site of obstruction is extraventricular
non communicating hydrocephalus
site of obstruction is at the ventricular level
