Axis
The second cervical vertebra: a long blade-like spine and the dens projecting forward into the atlas, which is the pivot the head turns on.
- System
- Bone
- Region
- Neck
- Sides
- Single, on the midline

Measured on the specimen
What the axis is in contact with in the model itself, with the share of the other structure’s surface it covers. A contact is not always a joint: bones that simply lie against one another are in this list too.
- Atlas17%
- Vertebra cervicalis III6%
Measured on the left side.
Terminology
- English
- Axis
- Latin (NAV)
- Axis
- Status
- A valid term in the Nomina Anatomica Veterinaria