I believe it is the internal carotid arteries.
The anterior and posterior cerebral arteries are both branches of the internal carotid artery
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
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.
The arteries that do not branch directly off the aortic arch include the subclavian arteries and the internal thoracic arteries. Instead, the subclavian arteries arise from the brachiocephalic trunk (on the right side) or directly from the arch of the aorta (on the left side). The internal thoracic arteries branch off the subclavian arteries, further indicating they do not stem directly from the aortic arch.