Each vertebra except the Atlas is composed of a body
and an arch; the arch is made up of two pedicles, short,
thick plates of bone extending outward and backward from
the postero-lateral surface of the body nearer its upper than
its lower border, two laminae, thin plates of bone extending
backward and inward from their union with the pedicles and
joining behind to form the spinous process, and has pro-
jecting from it seven processes, two transverse, one spinous,
and four articular, two of which are superior and two in-
ferior. The foramen enclosed by the body, pedicles, and
laminae is called the neural or vertebral foramen and the
canal formed by the connection of these foramina and com-
pleted by the ligaments which unite the arches is called
the neural, vertebral, or spinal canal. (chiropractor in Alexandria VA) It contains the spinal
cord with its membranes and the roots of the spinal nerves.
By means of the four articular processes each true vertebra
except the first articulates with its fellows above and below.
(chiropractor in Alexandria VA)
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