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vertebral artery
origin, subclavian artery; it is divided into four parts: first or prevertebral part,second or cervical part,third or atlantal part, and fourth or intracranial part;branches, (cervical part) spinal and muscular branches; (intracranial part) anterior spinal artery and posterior inferior cerebellar
artery and its branches, meningeal branches, and lateral and medial medullary branches; distribution, muscles of neck, vertebrae, spinal cord, cerebellum, interior of cerebrum.
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