# Tag: process

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## Radius and Ulna

The lower arm consists of two bones, the radius and the ulna.  The ulna articulates with the humerus to form a hinge joint.  The radius articulates with the ulna at the radial notch and forms a pivot joint, allowing for the rotation of the wrist. This type of …

## Atlas and Axis

The first two cervical vertebrae  are the atlas (C1)  and the axis (C2.) The atlas is named for the character from Greek Mythology who supported the globe, though in anatomy, the head is the globe.  In fact, the articular facets of the atlas align perfectly with the occipital …