K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Intracranial and extracranial arteries, rotating coloured 3D computed tomography (CT) angiogram scan. The scan shows the arteries supplying blood inside the cranial cavity. Ascending from the neck are the internal carotid arteries, the external carotid arteries, and the vertebral arteries, branching out to supply oxygenated blood to the brain and other tissues.
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