Cerebral blood supply

Question 1

anterior cerebral artery supplies which lobe

Answer 1

Frontal lobe medial portion
Medial parietal lobe

Question 2

anterior cerebral artery affects which functions

Answer 2

Motor and sensory function, lower limb more than upper limb

Personality changes if the occlusion of this artery causes a lesion

Question 3

middle cerebral artery supplies which lobes

Answer 3

Lateral frontal and parietal and temporal

Question 4

middle cerebral artery affects these functions

Answer 4

Motor and sensory function
Of upper limb more than lower limb

potential for language impairment on the left side

visual spatial relationship impairments on the right side

Supplies areas of optic radiations

Question 5

Posterior cerebral artery supplies, which lobes

Answer 5

Medial temporal lobe and occipital lobe

Question 6

posterior cerebral artery infarct can affect

Answer 6

Vision; cortical blindness

Loss of deep branches could affect the supply to diencephalon and hippocampus

Potentially resulting in
contralateral hemi sensory loss
flaccid Hemoparesis and declarative memory loss

Question 7

Homunculus placement

Answer 7

medial is lower limb
lateral is upper limb

Question 8

visiuospatial deficit is expected from an infarct due to occlusion of which artery

Answer 8

MCA

Question 9

left MCA superficial division infarct

Answer 9

Right face and arm weakness and sensory loss
Brocas aphasia
wernickes aphasia
Contralateral homonymous hemianopia

Question 10

right MCA superficial division infarct

Answer 10

left face and arm weakness and sensory loss
Left hemi neglect
visuospatial deficits
Impairment of nonverbal communication

Question 11

left MCA lenticulaostriate (deep) branches infarct

Answer 11

right hemiparesis due to damage to basal ganglia and to the internal capsule

Question 12

right MCA lenticolostriate branches

Answer 12

Left hemiparesis due to damage to basal ganglia and to the internal capsule

Question 13

Right homonymous hemianopia is a symptom of which artery being occluded

Answer 13

Left PCA

Question 14

left PCA infarct

Answer 14

right homonymous hemianopsia due to damage in visual cortex

Extension to splenium of corpus callosum interfering with communication between visual association areas can cause Alexia without agraphia

Larger infarcts involving the internal capsule and thalamus may cause right hemi sensory loss and right hemi paresis

Question 15

right pca infarct

Answer 15

left homonymous hemianopsia
left hemisensory loss
left hemiparesis

Question 16

behavioral abnormalities from which artery infarct

Answer 16

ACA
frontal lobe

Question 17

left aca infarct

Answer 17

right LE weakness due to damage to motor cortex

Right LE cortical sensory loss due to damaged sensory cortex

Frontal lobe behavior abnormalities

TransCortical aphasia, prefrontal, cortex or supplemental motor areas are involved.

Question 18

right ACA infarct

Answer 18

left LE weakness
left Le cortical sensory loss
grasp reflex
frontal lobe behavior abnormalities
Left hemineglect if prefrontal and nondominant association cortex involved

Question 19

ischemic stroke

Answer 19

blood flow obstructed by thrombus or embolus

Common type of stroke
MCA most common

Question 20

embolic strokes

Answer 20

Typically result in abrupt onset of symptoms and recovery can occur most rapidly in the first couple of weeks

Question 21

Thrombotic strokes

Answer 21

May also be abrupt, or they can have a more gradual onset with slower, recovery, and more residual deficits

Question 22

hemorrhagic strokes

Answer 22

Can have multiple detrimental effects on brain tissue

The blood supply downstream is interrupted due to the hemorrhage

The extravasated blood in the brain tissue can put pressure on the surrounding tissue

Blood can have cytotoxic effects on the brain tissue

Onset of symptoms and improvement typically occurs after the extravascular blood is removed in the edema resolves

Question 23

subcortical white matter lesions

Answer 23

Most common with damaged arteries of the internal capsule

Extreme effects due to bundling of high concentration of axons and tracks

Question 24

possible effects from subcortical white matter lesions

Answer 24

Contralateral decrease in volitional movement

Contralateral loss of conscious somatosensation

if Optic radiations involved, contralateral vision field loss

Question 25

thalamic lesions

Answer 25

involve the relay nuclei, which interrupt ascending pathways

Compromise contralateral sensation

Proprioception most affected

Common with Parkinson’s thalamic stroke, or brain injury

Question 26

lateropulsion

Answer 26

pusher syndrome

damage to right posterior thalamus

Pushing away from the less paretic side and sitting during transfers and standing and with walking

Pushing towards the hemiparetic side