5 Good Reasons to have a Personal Trainer. 1  Mix It Up with Cross Training. 2  Teaching vs. Showing. 3  Set-A-Pace. 4  Turn Weaknesses Into Strengths. 5  Accountability.
The vertebral artery is a major artery of the neck that passes through the cervical vertebrae. There are two vertebral arteries, one on each side, and each branches off from the subclavian artery. They merge to form the single basilar artery at the base of the brain.
The medulla is supplied by the posterior inferior cerebellar artery and by direct smaller branches from the vertebral arteries. The pons is supplied by small and large branches from the basilar artery. The midbrain and thalamus are supplied by penetrating arteries from the posterior cerebral arteries.