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Arteries of the Neck and Head
...  brain. Both the posterior communicating artery and the posterior cerebral artery can be found inside the circle of Willis. The left common carotid artery, in turn, divides and forms the ICA or the Internal carotid artery and the ECA or the external carotid artery. It is the Internal carotid artery that supplies blood to the brain, while the external carotid artery is responsible for the blood  ...

Blood Supply to the Brain
...  blood supply reach the brain? There are four vessels through which the arterial blood passes going to the brain. Each of these four vessels is actually in sets of paired arteries – one set of Internal carotid arteries and a pair of vertebral arteries. These eventually converge into one unified vessel found near the pituitary gland, which is located in the interior surface of the brain.  ...

External Carotid Arteries
...  carotid artery. There are two common carotid arteries, and these arteries supply oxygenated blood to the head and neck. The common carotid artery bifurcates into the external carotid artery and the Internal carotid artery. The external carotid artery supplies blood to the exterior of the head, the face and the greater part of the neck. On the other hand, the Internal carotid artery supplies  ...


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