GROSS ANATOMY

Detailed explanation-1: -The dens of C2 serves as an axis around which C1 rotates. This allows for the rotation of the head in the transverse plane. Due to the size of the intervertebral discs and the orientation of the facet joints, the cervical region has the greatest flexion ability of the spinal column.

Detailed explanation-2: -Cervical (neck)-the main function of the cervical spine is to support the weight of the head (about 10 pounds). The seven cervical vertebrae are numbered C1 to C7. The neck has the greatest range of motion because of two specialized vertebrae that connect to the skull.

Detailed explanation-3: -The cervical spine’s range of motion is approximately 80° to 90° of flexion, 70° of extension, 20° to 45° of lateral flexion, and up to 90° of rotation to both sides.

Detailed explanation-4: -Movements of the spine are possible due to intervertebral discs, and with the fulcrum of movement occurring primarily around the nucleus pulposus. Specialised motion occurs at the atlanto-occipital and atlantoaxial joints, which do not contain a disc.

Detailed explanation-5: -Its greatest movement occurs from the atlanto-occipital joint to the third cervical vertebra.