Disappearing Cerebral Communicating Vessels in Embryonic Development-With a Case of Carotid-Vertebrobasilar Artery Anastomosis.

ABSTRACT

In early embryonic development, anastomoses between carotid and basilar arteries occur in the primitive trigeminal, primitive otic, primitive hypoglossal, and primitive proatlantal arteries, and these anastomoses gradually disappear as the embryo continues to develop. This article reported a case of vascular anastomosis occurring between the external carotid artery and vertebral artery.