ventricular system

Anterior cerebral artery (ACA) supplies?

medial surface of frontal lobe (areas 4 and 6) and parietal lobe (areas 312 and 5,7)

what body area is represented by ACA?

LE, legs

ACA deficits?

UMN signs/symptoms in CL LE, sensory loss in CL LE, prefrontal cortext s/s. aphasia possible (L ACA) and L neglect possible (R ACA)

posterior cerebral artery (PCA) supplies?

medial surface of temporal and occipital lobe

what body area is represented by PCA? 

occipital lobe, vision 

PCA deficits?

CL homonymous hemianopia, CL sensory loss, CL hemiparesis, alexia without agraphia (L PCA), aphasia (L PCA)

middle cerebral artery (MCA) supplies?

lateral surface of each hemisphere and IC

2 primary branches of MCA?

superior (above sylvian fissure)

inferior (below sylvian fissure)

what body area is represented by MCA? 

face, trunk, and UE 

MCA superior deficits?

CL UMN signs face and UE, brocas aphasia (L MCA), CL face/UE sensory loss, CL neglect (R MCA)

MCA inferior deficits?

CL visual field, wernicke’s aphasia (L MCA), CL face/UE sensory loss, severe L neglect (R MCA), IL gaze preference, mild CL weakness

deep MCA deficits?

CL UMN hemiparesis, aphasia (L MCA), L neglect (R MCA)

stem MCA deficits? 

CL UMN hemiparesis, CL hemianesthesia, CL hemianopia with IL gaze preference, global aphasia (L MCA), severe L neglect ( R MCA) 

what are the causes of lesions?

disruption of arterial blood flow (ischemic stroke or hemorrhagic stroke)

what is ischemic stroke?

blockage within intact blood vessel, blood clot

what is hemorrhagic stroke?

blood vessel ruptures (trauma), breach of blood brain barrier