Which branch of the ulnar nerve supplies the adductor pollicis?

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Multiple Choice

Which branch of the ulnar nerve supplies the adductor pollicis?

Explanation:
The adductor pollicis is innervated by the deep branch of the ulnar nerve. This muscle lies in the deep palm and acts to adduct the thumb toward the palm. After the ulnar nerve enters the hand, the superficial branch is mainly sensory to the medial one-and-a-half digits, while the motor supply to most intrinsic hand muscles comes from the deep branch. The median nerve supplies the thenar muscles and the lateral two lumbricals, not the adductor pollicis. So the branch that provides motor innervation to the adductor pollicis is the deep branch of the ulnar nerve.

The adductor pollicis is innervated by the deep branch of the ulnar nerve. This muscle lies in the deep palm and acts to adduct the thumb toward the palm. After the ulnar nerve enters the hand, the superficial branch is mainly sensory to the medial one-and-a-half digits, while the motor supply to most intrinsic hand muscles comes from the deep branch. The median nerve supplies the thenar muscles and the lateral two lumbricals, not the adductor pollicis. So the branch that provides motor innervation to the adductor pollicis is the deep branch of the ulnar nerve.

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