In preparation for a procedure to remove the fingernail on an index finger, the physician would most likely anesthetize a branch of the
1.Anterior interosseus nerve
2.Median nerve
3.Musculocutaneous nerve
4.Radial nerve
sol:
Median nerve
a. The median nerve supplies the surface of the lateral palm, the palmar surface of the first three digits, and the distaldorsal surface of the index and middle fingers (including the nail beds).
b. Therefore, prior to performing surgery in this area, it is essential to anesthetize a branch of this nerve (possibly a proper digital branch) to eliminate pain sensation around the nail bed of the index finger.
c. The median nerve of the branchial plexus distributes to the flexor muscles on the forearm (flexor carpi radialis and palmaris longus), the pronators (p. quadratus and p. teres), digital flexors, and skin over the lateral surface of the hand.
d. Neither the anterior interosseus nor the musculocutaneous nerves supplies the hand. The anterior interosseous nerve supplies the flexor pollicis longus, the lateral half of flexor digitorum profundus, and pronator quadratus.
e. The musculocutaneous nerve supplies the coracobrachialis, biceps, and most of the brachialis muscle, then becomes the lateral cutaneous nerve of the forearm.
f. The radial nerve supplies skin on the radial side of the dorsal surface of the hand, but not the fingertips.
g. The ulnar nerve supplies the palmar and dorsal surfaces of the medial hand, including the palmar and dorsal surfaces of the fourth and fifth digits.