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Pg. 152-154 Vocab.

Vocabulary

TermDefinition
Vertebral Column or Spine extends from the skull which it supports to the pelvis where it transmits the weight of the body to the lower limbs.
Vertebrae before birth, the spine consists of 33 separate bones.
Intervertebral Discs the individuals are separated by pads of flexible fibrocartilage that cushion the vertebrae and absorb shocks while allowing the spine flexibility.
Herniated Dicss drying of the discs, along with a weakening of the ligaments of the vertebral column, predisposes older people.
Primary Curvatures spinal curvature in the thoracic and sacral regions
Secondary Curvatures they develop some time after birth
Body or Centrum disclike, weight-bearing part of the vertebra facing anteriorly in the vertebral column.
Vertebral Foramen arch formed from the joining of all posterior extensions.
Transverse Processes two lateral projections form the vertebral arch.
Spinous Pricess single projection arising form the posterior aspect of the vertabral arch.
Superior and Inferior Articular Processes paired projections lateral on the vertebral foreman, allowing a vertebra to form joints with adjacent vertebrae.
Cervical Vertebrae form the neck region of the spine.
Atlas the superior surfaces of its transverse processes contain large depressions that receive the occipital condyles of the skull.
Axis acts as a pivot for the rotation of the atlas above.
Dens acts as the pivot point.
Thoracic Vertebrae are all typical larger than the cervical vertebrae and are distinguished by the fact that they are the only vertebrae to articulate with the ribs.
Lumbar Vertebrae have massive blocklike bodies.
Sacrum is formed by the fusion of five vertebrae.
Coccyx is formed form the fusion of three to five tiny, irregularly shaped vertebrae.