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).
An aneurysm is a weakening of a blood vessel wall which then forms an outpouching that fills with blood. Aneurysms can form anywhere along an artery's path. In the brain, the most common location for an aneurysm is along the vascular tree at the base of the brain, called the Circle of Willis.he most common types of aneurysms are found in the arteries that connect the two internal carotid arteries: 30% of aneurysms form in the anterior communicating artery (AComm) and 25% form in the posterior communicating artery (PComm).