椎动脉沟 - Sulcus arteriae vertebralis

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描述

Immediately behind each superior articular process on the posterior arch, is the groove for vertebral artery (sulcus arteriæ vertebralis), sometimes converted into a foramen or canal by a delicate bony spiculum which arches backward from the posterior end of the superior articular process. This groove represents the superior vertebral notch, and serves for the transmission of the vertebral artery, which, after ascending through the foramen in the transverse process, winds around the lateral mass in a direction backward and medialward; it also transmits the suboccipital (first spinal) nerve.


结构高低级

大体解剖 > 骨, 骨骼系统 > 中轴骨骼 > 脊柱 > 颈椎 > 寰椎 > 寰椎后弓 > 椎动脉沟

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