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 phenomenon of vertebral steal occurs when a severe proximal subclavian artery stenosis or occlusion is present and blood reaches the affected arm by passing down the ipsilateral vertebral artery from the posterior fossa circulation, which is being supplied from the other vertebral artery or the circle of Willis (see Fig. 48.3B).