Cerebral arterial supply

Question 1

Describe area supplied by ACA and corresponding neurological deficits.

Answer 1

Supply: Frontal and medial areas of cortex, particularly frontal and parietal lobes, and anterior limb of the internal capsule.

Deficit: Weakness and paraesthesia of face and arms contralateral.

Question 2

Describe area supplied by MCA and corresponding neurological deficits.

Answer 2

Supply: lateral areas of cortex, and parietotemporal areas.

Deficit: Contralateral weakness/hemiplegia and hemiparaesthesia of face and arm. Dysphagia if dominant hemisphere. Contralateral homonymous hemianopia. Parietal neglect if non-dominant hemisphere.

Question 3

Describe area supplied by PCA and corresponding neurological deficits.

Answer 3

Supply: Occipital lobe.

Deficit: Contralateral homonymous hemianopia

Question 4

Describe area supplied by vertebrobasilar circulation and corresponding neurological deficits.

Answer 4

Supply: Cerebellum, brainstem and occipital lobes

Deficit: Hemianopia, cortical blindness, diplopia, nystagmus, ataxia, vertigo, dysarthria and dysphasia, coma

Question 5

Describe area supplied by lenticulostriate arteries and corresponding neurological deficits.

Answer 5

Supply: Basal ganglia, lentiform nucleus, putamen, thalamus, internal capsule

Deficit: Pure motor loss, pure sensory loss, ataxic hemiparesis (incoordination and weakness)

Question 6

Describe area supplied by PICA and corresponding neurological deficits.

Answer 6

Supply: Lateral medulla

Deficit: Lateral medullary syndrome; vertigo, dysphagia, vomiting, nystagmus, ataxia, soft palate paralysis, Horner’s syndrome, crossed sensory loss