Which arteries carry blood from the heart to the base of the skull?

• A. Venous circulation
• B. Internal Carotid Arteries
• C. Extracranial Arteries
• D. Posterior Circulation

Answer: (C)

The important idea here is that the base of the skull receives its blood supply from arteries that lie outside the cranial cavity, in the neck and upper regions. These are the extracranial arteries. They come from the heart and travel upward through the neck, giving off branches that reach and nourish the skull base. For example, branches from the external carotid system (and the vertebral arteries that run up the neck before entering the skull) supply structures at the base of the skull.

In contrast, the internal carotid arteries primarily feed the brain itself, especially the anterior and middle portions, rather than focusing on the skull base. The posterior circulation refers to the vertebrobasilar system supplying the brainstem and posterior brain areas, which is related to the brain rather than the base of the skull specifically. So, the best description for arteries carrying blood from the heart to the base of the skull is the extracranial arteries.