C1 vertebra

Vertebra cervicalis C1

SkeletalSkeletonHead

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What it is
The atlas: a bony ring with no body and no spinous process; two lateral masses carry the occipital condyles of the skull.
Function
Supports the skull and allows nodding at the atlanto-occipital joints.
Size
Body 22 mm wide × 16 mm deep × 14 mm tall; canal ≈ 18 mm
Clinical note
Named after the Titan Atlas who held up the heavens.