What is "basilar artery"

n. an unpaired artery; supplies the pons and cerebellum and the back part of the cerebrum and the inner ear [syn: arteria basilaris]

In human anatomy, the basilar artery is one of the arteries that supplies the brain with oxygen-rich blood.

The two vertebral arteries and the basilar artery are sometimes together called the vertebrobasilar system, which supplies blood to the posterior part of circle of Willis and anastomoses with blood supplied to the anterior part of the circle of Willis from the internal carotid arteries.