vertebral artery(redirected from pars intracranialis arteriae vertebralis)
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ver·te·bral ar·te·ry(vĕr'tĕ-brăl ahr'tĕr-ē) [TA]
Synonym(s): arteria vertebralis [TA] .
vertebral arteryAbbreviation: VA
The vertebral arteries carry about 20% of the brain's blood supply, feeding the brainstem, cerebellum, and most of the posterior cerebral hemispheres. Blockages of the vertebral circulation, e.g., an ischemic stroke, can produce problems in vegetative functions, such as consciousness and respiration, and problems of balance, hearing, motor coordination, and visual perception.