A 18-year-old woman comes to your clinic for a sports physical so she can be cleared to play college water polo. During the physical exam you ask her to flex the distal part of her finger at the distal interphalangeal joint on her 3rd digit, which is her middle finger. What specific muscle and nerve are being tested in this case?
1.Flexor digitorum profundus,median
2.Flexor digitorum profundus,ulnar
3.Flexor digitorum superficialis, median
4.Flexor digitorum superficialis ,ulnar
Explanation
The muscle being tested is the flexor digitorum profundus, which flexes the 3rd finger at the DIP, and is innervated by the median nerve. The flexor digitorum profundus for digits 4 and 5 flexes the DIP, and is innervated by the ulnar nerve. The flexor digitorum superficialis flexes fingers at the PIP, and is innervated by the median nerve.: