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Verbal Column Vocab.

Pg 152-154 Vocabulary

TermDefinition
Vertebral Column or spine The spine, formed of a number of individual bones called vertebrae and two composite bones (sacrum and coccyx)
Vertebrae Before birth the spine consists of 33 separate bones, but 9 of these merge to form two composite bones.
Intervertebral Discs Pads of flexible fibrocartilage that cushion the vertebrae and absorb shocks while allowing the spine flexibility.
Herniated Discs Drying of the discs, along with a weakening of the ligaments of the vertebral column, predisposed to older people. May also result when the vertebral column is subjected to exceptional twisiting forces.
Primary Curvatures The spinal curvatures in the thoracic and sacral regions.
Secondary Curvatures The curvatures in the cervical and lumbar regions.
Body or Centrum Disclike, weight-bearing part of the vertebra facing anteriorly in the vertebral column
Vertebral Arch Arch formed from the joining of all posterior extensions the laminae and pedicles, from the vertebral body.
Vertebral Foramen Canal through which the spinal cord passess.
Transverse Processes Two lateral projections from the vertebral arch.
Spinous Process Single projection arising from the posterior of the vertebral arch (actually the fused laminate).
Superior and inferior articular processes Paired projections lateral to the vertebral foramen, allowing a vertebra to form joints with adjacent vertebrae.
Cervical Vertebrae Identified as C1 - C7 which form the neck region of the spine.
Atlas The first cervical vertebra; articulates with the occipital bone of the skull and the second cervical vertebra (axis)
Axis (1) The second cervical vertebra; has a vertical projection called the dens around which the atlas rotates (2) The imaginary line about which a joint or structure revolves
Dens A large upright process which acts as the pivot point.
Thoracic Vertebrae Identified as T1 - T12. Larger than the cervical vertebrae and are distinguished by the fact that they are the only vertebrae to articulate with their ribs.
Lumbar Vertebrae Classified as L1 - L5 which have massive, blocklike bodies.
Sacrum Formed by the fusion of five vertebrae. Superiorly it articulates with L5, but it connects with the coccyx inferiorly.
Coccyx Formed from the fsion of three to five tiny, irregularly shaped vertebrae.
Created by: ozy
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