Action of longissimus cervicis?

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Multiple Choice

Action of longissimus cervicis?

Explanation:
The longissimus cervicis is an erector spinae muscle that runs along the back of the neck, connecting thoracic transverse processes to cervical transverse processes. When both sides contract, it acts to extend the cervical spine, bringing the head and neck upright from a flexed position. When it contracts on one side, it helps tilt the neck to the same side, i.e., lateral flexion. It does not flex the cervical spine, nor does it extend the lumbar spine (that’s handled by the lumbar portion of the erector spinae), and rotation of the trunk is not its primary action. Therefore, the best description is that it extends the cervical spine and assists in lateral flexion.

The longissimus cervicis is an erector spinae muscle that runs along the back of the neck, connecting thoracic transverse processes to cervical transverse processes. When both sides contract, it acts to extend the cervical spine, bringing the head and neck upright from a flexed position. When it contracts on one side, it helps tilt the neck to the same side, i.e., lateral flexion. It does not flex the cervical spine, nor does it extend the lumbar spine (that’s handled by the lumbar portion of the erector spinae), and rotation of the trunk is not its primary action. Therefore, the best description is that it extends the cervical spine and assists in lateral flexion.

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