What muscles are found in the anatomical snuff box?

• A. Flexors of the wrist
• B. Extensors of the wrist
• C. Abductor pollicis longus and extensors pollicis
• D. Pronators of the forearm

Answer: (C)

The anatomical snuff box is a triangular depression located on the lateral aspect of the wrist, primarily associated with the movement of the thumb. The muscles that are explicitly found in this area are the abductor pollicis longus and the extensors pollicis, which play a crucial role in thumb movement and wrist extension.

The abductor pollicis longus is responsible for abducting the thumb and assisting in its extension, while the extensor pollicis brevis and extensor pollicis longus are involved in extending the thumb at the metacarpophalangeal and interphalangeal joints. These muscles form the boundaries of the anatomical snuff box, making their presence significant for both the anatomy of the wrist and functional movements involving the thumb.

Understanding the specific muscles in the anatomical snuff box is vital for recognizing potential injuries or conditions that might affect this area, such as scaphoid fractures, which can occur from falls on an outstretched hand. Knowing that these particular muscles contribute to the function and integrity of the anatomical snuff box underscores their importance in athletic training and rehabilitation contexts.