Trapezius muscle damage would impact which part of the body?

• A. Low Back
• B. Hand
• C. Neck
• D. Knee

Answer: (C)

The trapezius sits across the upper back and neck and moves the shoulder girdle while also helping stabilize and move the head and neck. Its upper fibers assist in extending and laterally flexing the neck and in supporting head posture, while the muscle as a whole coordinates movements of the shoulder blade to allow arm lifting. If the trapezius is damaged, the neck region would be most directly affected because of its attachments to the skull and cervical spine and its role in neck movements. The other areas listed are controlled mainly by different muscle groups: the low back by lumbar muscles, the hand by forearm and intrinsic hand muscles, and the knee by thigh and leg muscles.