The anterior and posterior cerebral arteries are both branches of the internal carotid artery
I believe it is the internal carotid arteries.
the carotid arteries
I beileve (Looking in my Hole's anatomy & physiology text) that the anterior cerebral branches off the middle cerebral, which branches from the posterior communicating artery. Or it circles around to the anterior communicating artery. They all form the cerebral arterial circle.
Basilar Artery
The artery that branches from the internal carotid artery and is divided into four segments, including the lenticulostriate arteries, is the middle cerebral artery (MCA). The MCA supplies a significant portion of the lateral cerebral hemisphere and is crucial for motor and sensory functions. The lenticulostriate arteries, which arise from the MCA, supply deep structures of the brain, including the basal ganglia and internal capsule.
Aorta
The gastrocnemius muscle receives its blood supply primarily from the popliteal artery, which branches into the posterior tibial and anterior tibial arteries. Specifically, the sural arteries, which arise from the popliteal artery, provide the main vascular supply to the gastrocnemius. Additionally, the muscle may receive some blood from the medial and lateral femoral circumflex arteries.
AORTA
Just outside the Left ventricle, in the aortic cusp.
Just outside the Left ventricle, in the aortic cusp.
They are the first vessel off the aorta. The originate in the aortic cusp.
Coronary arteries branch from the aorta and supply the heart muscle.