Figure 1. Anatomy of the vertebral artery. C2 represents the second cervical vertebrae, C6 is the sixth cervical vertebrae. V1, V2, V3 and V4 are the anatomic segments of the vertebral artery.

The two vertebral arteries join at the base of the brain to form the single midline basilar artery, which gives rise to the posterior cerebral arteries. ... Gray, H. Anatomy of the Human Body.

Microsurgical anatomy of the intracranial part of the vertebral artery. Neurol Res 1994; 16 : 171–180. Article CAS Google Scholar ...

Creating a passageway for vertebral arteries: Vertebral arteries carry blood to the brain via small holes in the cervical spine that provide them with a safe passageway to facilitate blood flow.