The ______________ is (are) formed when the vertebral arteries unite at the base of the brain.
A) subclavian arteries
B) common carotid arteries
C) external carotid arteries
D) internal carotid arteries
E) cerebral arterial circle (circle of Willis)

Question

Quizplus · Accepted Answer

The cerebral arterial circle, also known as the circle of Willis, is formed by the joining of the two vertebral arteries at the base of the brain. It is an important arterial connection in the brain, as it allows for collateral blood flow in the event of blockage or constriction of one of the major arteries supplying the brain.

The ______________ Is (Are) Formed When the Vertebral Arteries Unite