the brain is how much percent of body weight ?
2%
the brain uses how much percent of oxygen?
20%
Ischemic stroke
blockage of blood vessel
Hemorrhagic stroke
breakage of blood vessel
Thrombus
clot in brain
Embolus
clot forms somewhere in body and gets logged in blood vessel
Ischemic stroke is caused by?
atherosclerosis
a hemorrhagic stroke is also known as?
aneurysm
2 divisions of common carotid
external and internal
external carotid supplies?
face and scalp
internal carotid supplies?
anterior and middle parts of the brain
internal carotid divides into?
anterior and middle cerebral artery
anterior cerebral artery runs along?
medial longitudinal fissure
anterior cerebral artery supplies blood to?
medial cortex, primary motor area, primary sensory area, frontal lobe and basal ganglia
how does a CVA impact the anterior cerebral artery?
paralysis or weakness of contralateral lower body
sensory loss in contralateral lower body
behavioral changes
middle cerebral artery runs along?
lateral fissure
middle cerebral artery supplies blood to?
lateral aspects of each hemisphere
lateral aspects of primary motor area and primary sensory area
Broca's and Wernicke's
temporal and parietal lobe
how does a CVA impact the middle cerebral artery?
paralysis/weakness of contralateral face and arm
sensory loss of contralateral face and arm
aphasia
contralateral neglect
posterior system supplies?
brainstem and back of brain
vertebral arteries ascend through ____________ and travel beside the ___________
spinal column, brainstem
at the ______ the vertebral arteries join together to form the _______ artery
...
posterior cerebral artery supplies blood to?
occipital and temporal lobes
stroke impacting posterior cerebral artery results in?
agnosia
prosopagnosia
cortical visual impairment
hemianopsia
name the cerebellar arteries that arise from the basilar artery
superior cerebellar artery
anterior inferior cerebellar artery
posterior inferior cerebellar artery
stroke of anterior inferior cerebellar artery results in?
AICA syndrome (vertigo, vomiting, nystagmus, ipsilateral facial paralysis, ipsilateral hearing loss and tinnitus)
stroke of inferior cerebellar artery results in?
PICA syndrome (dizziness, ipsilateral facial numbness, ataxia, dysarthria, ptosis
anterior communicating artery
joins anterior cerebellar arteries of each hemisphere together
posterior communicating artery
joins middle cerebral arteries to posterior cerebral arteries
if there is disruption, communicating arteries allow for?
blood to continue to circulate
blood supply of SC comes from?
vertebral arteries
two branches of vertebral arteries
one anterior spinal artery
two posterior spinal arteries
anterior spinal artery originates in?
medulla
anterior spinal artery descends down?
medulla and anterior aspect of SC
posterior spinal arteries come from?
vertebral artery
posterior spinal arteries descend down?
posterior aspect of SC
radicular arteries supply?
all spinal cord levels
radicular arteries meet with and supply?
anterior and posterior spinal arteries