What movement is primarily associated with the C5 nerve root?

• A. Wrist extension
• B. Shoulder abduction
• C. Finger flexion
• D. Elbow extension

Answer: (B)

The C5 nerve root is primarily responsible for innervating certain muscles in the shoulder region, particularly those involved in shoulder abduction. This includes major muscles such as the deltoid and supraspinatus, which facilitate the movement of raising the arm laterally away from the body. When the C5 nerve root is functioning properly, it enables effective shoulder abduction, which is a critical movement in various athletic and daily activities.

In contrast, other movements listed are associated with different nerve roots. For example, wrist extension is primarily linked to the C6 and C7 nerve roots, finger flexion is associated with the C8 and T1 nerve roots, and elbow extension relates to the C7 and C8 nerve roots. Understanding these associations helps in diagnosing nerve injuries and effectively planning rehabilitation strategies in the context of athletic training.