Final answer:
Half of the flexor digitorum profundus muscle is innervated by the ulnar nerve and the other half by the median nerve.
Step-by-step explanation:
The flexor digitorum profundus muscle is innervated by two different nerves. Half of the muscle is innervated by the ulnar nerve and the other half is innervated by the median nerve. The ulnar nerve supplies the muscles of the pinky finger and half of the ring finger, while the median nerve supplies the muscles of the thumb, pointer finger, middle finger, and half of the ring finger. The flexor digitorum profundus muscle, which plays a crucial role in flexing the phalanges of the fingers and the hand at the wrist, is innervated by two different nerves. Half of this muscle receives innervation from the ulnar nerve, and the other half by the median nerve. This is an important anatomic detail relevant to both the function of the muscle and clinical considerations in cases of nerve injury.