The neck an ar of the spine is well-known as the Cervical Spine. This an ar consists of 7 vertebrae, which space abbreviated C1 v C7 (top come bottom). This vertebrae defend the mind stem and also the spinal cord, assistance the skull, and allow for a wide selection of head movement.
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The first cervical vertebra (C1) is referred to as the Atlas. The Atlas is ring-shaped and it supports the skull. C2 is referred to as the Axis. That is one in form with a blunt tooth-like framework (called the Odontoid Process or dens) that projects upward right into the Atlas. Together, the Atlas and also Axis allow the head come rotate and also turn. The other cervical vertebrae (C3 with C7) space shaped like boxes with small spinous procedures (finger-like projections) that prolong from the ago of the vertebrae.
Beneath the critical cervical vertebra space the 12 vertebrae the the Thoracic Spine. These are abbreviated T1 through T12 (top to bottom). T1 is the smallest and also T12 is the biggest thoracic vertebra. The thoracic vertebrae are bigger than the cervical bones and have longer spinous processes.
In enhancement to much longer spinous processes, rib attachments include to the thoracic spine’s strength. These frameworks make the thoracic spine an ext stable 보다 the cervical or lumbar regions. In addition, the rib cage and also ligament system limit the thoracic spine’s selection of motion and also protects many an essential organs.
The Lumbar Spine has 5 vertebrae abbreviation L1 through L5 (largest). The size and also shape of each lumbar vertebra is design to lug most the the body weight. Every structural aspect of a lumbar vertebra is bigger, wider and broader than similar components in the cervical and also thoracic regions.
The lumbar spine has more range of motion than the thoracic spine, however less than the cervical spine. The lumbar facet joints enable for significant flexion and extension movement but boundaries rotation.
The Sacrum is located behind the pelvis. 5 bones, abbreviated S1 through S5, fused right into a triangle shape, kind the sacrum. The sacrum fits in between the 2 hip bones connecting the spine to the pelvis. The critical lumbar vertebra (L5) articulates (moves) v the sacrum.
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Immediately listed below the sacrum room five extr bones, fused together to kind the Coccyx (tailbone).