Question

after breaking her forearm, riley lost motor function and feeling in her fourth and fifth phalanges as well as that side of her hand. what nerve had/have been damaged?
multiple choice

axillary nerve

musculocutaneous nerve

obturator nerve

ulnar nerve

Explanation:

The ulnar nerve is responsible for motor function and sensation in the fourth and fifth phalanges (fingers) and the medial (inner) side of the hand. The axillary nerve innervates the deltoid muscle and provides sensation to the shoulder area. The musculocutaneous nerve supplies the anterior arm muscles and provides sensation to the lateral forearm. The obturator nerve is involved with the medial thigh muscles and sensation in that region.

Answer:

Ulnar nerve