Question

bio130 exam 3 - chapters 10 and 11 nervous syst... 37 multiple choice 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 has/have been damaged? obturator nerve axillary nerve musculocutaneous nerve ulnar nerve

Explanation:

The ulnar nerve innervates the fourth and fifth phalanges (fingers) and the medial (ulnar) side of the hand, controlling motor function and sensation there. The obturator nerve is for the thigh, the axillary nerve for the shoulder, and the musculocutaneous nerve for the arm/forearm muscles (not the specific hand digits here). So the damaged nerve is the ulnar nerve.

Answer:

Ulnar nerve