A circle of arteries that supply blood to the brain. The Circle of Willis comprises the following arteries: Anterior cerebral artery (left and right); Anterior communicating artery; Internal carotid artery (left and right); Posterior cerebral artery (left and right); Posterior communicating artery (left and right).The basilar artery and middle cerebral arteries, supplying the brain, are also considered part of the circle [ http://en.wikipedia.org/wiki/Circle_of_Willis ]

This is just here as a test because I lose it

Term information

Subsets

pheno_slim

definition

A circle of arteries that supply blood to the brain. The Circle of Willis comprises the following arteries: Anterior cerebral artery (left and right); Anterior communicating artery; Internal carotid artery (left and right); Posterior cerebral artery (left and right); Posterior communicating artery (left and right).The basilar artery and middle cerebral arteries, supplying the brain, are also considered part of the circle

depicted by

http://upload.wikimedia.org/wikipedia/commons/2/2e/Circle_of_Willis_en.svg

has broad synonym

arterial circle

has exact synonym

cerebral arterial circle

arterial circle of Willis

has related synonym

Willis circle

circulus arteriosus cerebri

id

UBERON:0003709

taxon notes

In zebrafish, the circle of vessels comprised of the basal communicating artery (BCA) and posterior communicating segments (PCS) superficially resemble but are not homologous to the human circle of Willis