Vertebral artery - Course, Segments, Branches | Kenhub
WebJul 22, 2022 · The artery curves medially and posteriorly, passing behind the superior articular process of the atlas and reaches the groove on the upper surface of the posterior arch of the atlas. From there, it passes under the posterior atlantooccipital membrane and enters the vertebral canal. The horizontal part is contained in the occipital triangle.
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