C2 vertebra
C2 Vertebra
The C2 vertebra, also known as the Axis, is the second cervical vertebra from the top and the one upon which the head pivots.
Pronunciation
The C2 vertebra is pronounced as "see-two ver-te-bra".
Etymology
The term "C2 vertebra" is derived from the Latin word "vertebra", which means a joint or something to turn. The "C2" denotes its position as the second vertebra in the cervical spine.
Structure
The C2 vertebra is unique in its structure. It has a strong bony projection (odontoid process or dens) that rises vertically from the upper part of the vertebra. The Atlas, the first cervical vertebra, rotates around the odontoid process of the axis.
Function
The primary function of the C2 vertebra is to provide a pivot and axis for rotational movement of the head. It also helps in protecting the spinal cord and supporting the skull.
Related Terms
- Cervical vertebrae: The seven vertebrae that make up the neck.
- Atlas: The first cervical vertebra.
- Odontoid process: A tooth-like projection of the axis around which the atlas rotates.
- Spinal cord: The main pathway for information connecting the brain and peripheral nervous system.
See Also
External links
- Medical encyclopedia article on C2 vertebra
- Wikipedia's article - C2 vertebra
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