WOW! What at interesting question?? I do not know the answer to your problem, however, I had whip lash twice within 5 months many years ago. 5 & 6 are nearly touching and sometimes pinch the nerve. I do OK until I work with my personal trainer doing a lot of upperbody work. I have had problems 3 times while working out with my trainer very hard; the neurologist thinks I had TIA's twice & a full-blown stroke the third time! Coincidence??
Lumbar
The thoracic vertebrae are found in the chest region of the body. Humans have twelve thoracic vertebrae which are located between the cervical and lumbar vertebrae.
There isextension of brain in neck, thorax and abdomen in what is called as vertebral column. You have seven cervical vertebrae, twelve thoracic vertebrae and five lumber vertebrae fallowed by sacrum.In between them, you have inter-vertebral disc and various ligaments. Which keep them in position. In the hollow part of these vertebrae, there is spinal cord. It extends to the lower border of second lumber vertebrae. Down to it, there is bundle of nerves called as cauda-equina.
There are 33 vertebrae in the spinal cord of a human being. They are broadly categorized into 5 areas. They are called the cervical, thoracic, lumbar, sacrum & coccyx vertebra. The upper 3 areas have a total of 24 vertebrae, which includes 7 cervical vertebrae, 12 thoracic vertebrae & 5 lumbar vertebrae. Sometimes the lumbar region, may have an additional vertebra, it does happen - but it is rare. 5 vertebrae are fused together to form the sacrum & 3 vertebrae form the end of the spinal column which is the coccyx.
The 12 thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. They are intermediate in size between those of the cervical and lumbar regions; they increase in size as one proceeds down the spine, the upper vertebrae being much smaller than those in the lower part of the region. They are distinguished by the presence of facets on the sides of the bodies for articulation with the heads of the ribs, and facets on the transverse processes of all, except the eleventh and twelfth, for articulation with the tubercles of the ribs.
The thoracic spine has twelve vertebral bodies. These structures have very little motion because they are firmly attached to the ribs and sternum (breastbone). Distinguished by the presence of coastal facets for the articulation of the heads of ribs. Body is intermediate in size between the cervical and lumbar vertebrae The lumbar spine has five vertebral bodies that extend from the lower thoracic spine (upper back) to the sacrum (bottom of the spine). The vertebral bodies of the lower back are the largest of the spine because they bear the majority of the body's weight. The paired facet joints on the back of the vertebral segments are aligned so that they allow flexion/extension but not a lot of rotation. Does not have coastal facets nor transverse process foramina
vertebrae Inter means "between", vertebral obviously means vertebrae as mentioned above, and foramina is plural for foramen, which is a hole. Intervertebral foramina are formed in the space between two vertebrae. When two or more vertebral bones are stacked, the intervertebral foramina would be inferior to the pedicles of the superior vertebrae and superior to the pedicles of the inferior vertebrae. It will create a hole that goes between the two vertebrae horizontally. The spinal cord goes through the vertebral foramen vertically, and the nerve roots slip out horizontally through the intervertebral foramina.
Human beings have a vertebral column of which the snakes do not have.
what type of joint is between bodies of vertebrae ? cartilaginous joint
Thoracic vertebrae are between the cervical vertebrae and the lumbar vertebrae. The ones farther down the spine are larger. They have facets on the sides of the bodies for articulation with the heads of the ribs.
The facet joints are the joints between adjacent vertebrae.
some lateral flexion and rotation