Cervical vertebrae
Cervical Vertebrae
The Cervical Vertebrae (pronounced: /ˈsɜːrvɪkəl ˈvɜːrtɪbriː/) are the seven cylindrical bones, or vertebrae, that provide support and structure to the cervical spine. The cervical vertebrae are abbreviated as C1 through C7, top to bottom.
Etymology
The term "cervical" originates from the Latin word "cervix" which means "neck". "Vertebrae" is derived from the Latin word "vertere" meaning "to turn".
Structure
The cervical vertebrae are composed of different parts: the body, the vertebral arch, and seven processes. The first two vertebrae, C1 and C2, are highly specialized and are given unique names: atlas and axis, respectively. Their function is to support the skull, enable head movements and protect the spinal cord.
Related Terms
- Atlas (anatomy): The topmost vertebra and with the occipital bone, it forms the joint connecting the skull and spine.
- Axis (anatomy): Forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates.
- Cervical Spine: The cervical spine consists of seven vertebrae and is located in the neck.
- Vertebrae: The individual bones that stack to make the spine (backbone).
- Spinal Cord: The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.
External links
- Medical encyclopedia article on Cervical vertebrae
- Wikipedia's article - Cervical vertebrae
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