Circulation of CNS

Question 1

The Middle cerebral artery (MCA) is a branch of which artery? where does it run?

Answer 1

internal carotid, runs laterally in the lateral fissure

Question 2

The anterior cerebral artery (ACA) branches from which artery? where does it run?

Answer 2

from internal carotid -> runs anteriorly in the longitudinal sulcus then curves posteriorly in the superior corpus callosum

Question 3

What artery supplies the majority of M1 and S1?

Answer 3

MCA -> except lower limb which is supplied by ACA

Question 4

Which artery (and divisions) supplies Brocas and Wernickes areas?

Answer 4

MCA - superior division for Brocas, and inferior division for Wernickes

Question 5

What artery supplies the primary visual cortex?

Answer 5

Posterior cerebral artery

Question 6

What do the vertebral arteries give rise to?

Answer 6

Anterior spinal artery, Postero-inferior cerebellar arteries then unite to form the Basilar artery

Question 7

Where does the Basilar artery bifurcate? what are its terminal branches?

Answer 7

at the anterior midbrain bifurcates to form the L and R posterior cerebral arteries