Which of the following muscles would you examine to assess the ulnar nerve function?

To assess the function of the ulnar nerve, examining the abductor digiti minimi (ADM) is particularly relevant because this muscle is directly innervated by the ulnar nerve. The ADM is responsible for the abduction of the little finger, and dysfunction of this muscle can indicate issues with ulnar nerve integrity.

When evaluating ulnar nerve function, particular attention is given to the innervation of the small muscles of the hand, especially those that are involved in the movement of the little finger. The ulnar nerve is critical for fine motor control and the coordination of grasp and pinch movements.

Other muscles listed, while involved in various hand functions, are not innervated by the ulnar nerve. The abductor pollicis brevis (APB), for instance, is primarily innervated by the median nerve and is involved in thumb movement. The flexor pollicis longus (FPL) is also innervated by the median nerve and functions in flexing the thumb. The first dorsal interosseous (FDI), while innervated by the ulnar nerve, may not provide as clear an assessment when testing individually since it generally functions in the abduction of the