Other English forms include the shortening Retha, and the spelling variant Areta. Variant forms of Aretha used in other languages include the Latinized Arethusa and the French Arette. Aretha is rare as a baby name for girls.
Circle of Willis Arteries. 1  anterior cerebral artery. 2  internal carotid artery. 3  posterior communicating artery. 4  posterior cerebral artery. 5  basilar artery. 6  middle cerebral artery. 7  anterior communicating artery (minute connection between the left and right anterior cerebral arteries).
Trace cranial nerves to foramina through which they exit the cranial cavity. Trace the arterial supplies to the circle of Willis on the base of the brain, and connect it to the arteries emerging through the foramen magnum. Consider the effect of occlusion of those arteries.