The cervical spine is formed by seven square shaped bones called cervical vertebrae. The vertebrae are named beginning at the top with C1, C2, C3, down to C7. Together with the supporting ligaments and the overlying neck muscles, the cervical vertebrae form a spinal canal that surrounds and protects the spinal cord. The vertebrae have gelatin-like cushions between them called intervertebral discs which function as shock absorbers.Cervical strain is due to spasm of cervical and upper back muscles. It may result from injury or due to physical stress of everyday life, including poor posture, muscle tension from anxiety and high stress level or from poor sleeping habits.
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