The human
spine is composed of 33 separate bones which are stacked vertically on top of
one another. Our vertebrae along with our spine provides support to our whole
body which helps us stand erect, bend or twist, at the same time shielding the
spinal cord from any kind of injuries.
Spinal curves
When you
view the adult spine from the side, you will notice that it forms a natural
S-shaped curve. While the thoracic region and the sacral region have a slight
convex curvature, the cervical and the lumbar regions have a gentle concave
curve. Just like a coiled spring is able to absorb shock, the curves work
together and do the same to maintain balance and also allow a small range of
movement along the spinal column.
The natural
curves of your spine are maintained by the muscles, but having a correct
posture helps a great deal. Certain factors can cause a misalignment of the
spine, such as weak muscles, excessive body weight, etc. Some of the
abnormalities caused are:
- Scoliosis - is caused by the side to side abnormal curve.
- Kyphosis - which is also known as hunchback is caused when the thoracic spine is abnormally curved.
- Lordosis - or sway back is the abnormal curve in the lumbar region.
Spinal cord
The spinal
cord of a human is approximately 18 inches in length and is as thick as your
thumb. The spinal cord is very sensitive and thus is protected by the vertebral
column. Any injury to it can cause a severe loss of any kind of sensory and
motor functions from below the spot of the injury.
The spinal
nerves in the spinal cord follow a striped pattern all across the body
connecting the parts they control. The position of a spinal problem can be
diagnosed and identified by doctors by following these patterns.
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