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 vertebral artery is typically divided into 4 segments: V1 (preforaminal): origin to transverse foramen of C6. V2 (foraminal): from the transverse foramen of C6 to the transverse foramen of C2. V3 (atlantic or extradural): from C2 to the dura.