Cervical vertebra, second
The second cervical vertebra is called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra. The joint between the axis and atlas is a pivot type of joint. It allows the head turn. The Latin word "axis" means axle or pole. The axis bone serves as the axle about which the atlas (and the head) turn.

Medical dictionary. 2011.

Look at other dictionaries:

  • C2 (cervical vertebra) — C2 is the symbol for the second cervical vertebra, which is also called the axis. It is so named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra. The joint between the… …   Medical dictionary

  • cervical ganglion — n any of three sympathetic ganglia on each side of the neck: a) a ganglion at the top of the sympathetic chain that lies between the internal carotid artery and the second and third cervical vertebrae and that sends postganglionic fibers to the… …   Medical dictionary

  • Cervical vertebrae — Bone: Cervical vertebrae Vertebral column …   Wikipedia

  • Cervical vertebrae — The cervical (neck) vertebrae are the upper 7 vertebrae in the spinal column (the vertebral column). They are designated C1 through C7 from the top down. C1 is called the atlas. It supports the head and is named for the Greek god Atlas who was… …   Medical dictionary

  • cervical vertebrae — the seven bones making up the neck region of the backbone. The first cervical vertebra the atlas consists basically of a ring of bone that supports the skull by articulating with the occipital condyles (see occipital bone). The second vertebra… …   The new mediacal dictionary

  • Cervical spinal nerve 8 — The cervical spinal nerve 8 (C8) is a spinal nerve of the cervical segment.[1] It originates from the spinal column from below the cervical vertebra 7 (C7). Contents 1 Innervation 1.1 Sensory 1.2 Motor …   Wikipedia

  • vertebra dentata — the second cervical vertebra (axis [TA]) …   Medical dictionary

  • Vertebra — Ver te*bra, n.; pl. {Vertebr[ae]}. [L. vertebra, fr. vertere to turn, change. See {Verse}.] [1913 Webster] 1. (Anat.) One of the serial segments of the spinal column. [1913 Webster] Note: In many fishes the vertebr[ae] are simple cartilaginous… …   The Collaborative International Dictionary of English

  • Cervical enlargement — Diagrams of the medulla spinalis. (Cervical enlargement labeled at upper right.) Latin intumescentia cervicalis Gray s …   Wikipedia

  • Vertebra — A vertebra (plural: vertebrae ) is an individual irregular bone in the spinal or vertebral column ( aka ischis), a flexuous and flexible column that is a defining characteristic of vertebrate animals.There are normally thirty three (33) vertebrae …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”