Table of Contents
Circle of Willis
The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures in reptiles, birds and mammals, including humans.
See Circulus arteriosus and Circle of Willis
Circulus arteriosus minor
Circulus arteriosus minor or minor arterial circle of iris is an arterial circle near the pupillary margin of the iris. It is formed by branches from the major arterial circle of the iris.
See Circulus arteriosus and Circulus arteriosus minor
Major arterial circle of the iris
Major arterial circle of the iris" (also: "major circulus arteriosus of iris", or "circulus arteriosus iridis major") is a circular artery of the eye formed by anastomoses of the anterior ciliary arteries and long posterior ciliary arteries at the ciliary body.
See Circulus arteriosus and Major arterial circle of the iris

