Labyrinthine Artery

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The vertebral arteries ascend via the cervical vertebrae and enter the cranium through the foramen magnum (literally the "big hole" where the spinal cord enters the skull). Just after entering the cranial space, the right and left vertebral arteries give rise to the right and left posterior spinal arteries , which travel down the posterior spinal cord (not pictured in figure 2).

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It arises from the basilar artery on each side at the level of the junction between the medulla oblongata and the pons in the brainstem . It has a variable course, passing backward to be distributed to the anterior part of the undersurface of the cerebellum, anastomosing with both the posterior inferior cerebellar (PICA) branch of the vertebral artery and the superior cerebellar artery .

The purpose of this page is to consider the findings in brainstem strokes in detail. More general aspects of brainstem strokes and TIA's related to vertigo are considered elsewhere .

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.

The two vertebral arteries and the basilar artery are sometimes together called the vertebrobasilar system , which supplies blood to the posterior part of the circle of Willis and joins with blood supplied to the anterior part of the circle of Willis from the internal carotid arteries .

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