|Bone: Atlas (anatomy)|
|First cervical vertebra, or Atlas|
|Posterior atlantoöccipital membrane and atlantoaxial ligament. (Atlas visible at center.)|
|Gray's||subject #21 99|
The atlas connects to a vertebra called the axis. Together they form the joint connecting the skull to the rest of the spine. The atlas and axis are different in shape from all the other vertebrae. They have more movement. They allow the head to nod and to rotate (turn).