After a particularly bad forearm break, a person loses motor function and feeling in their 4ᵗʰ and 5ᵗʰ phalanges, along with the side of the hand directly above these fingers. Which nerve(s)has/have been damaged?
A)The musculocutaneous nerves
B)The ulnar nerve
C)The axillary nerve
D)The obturator nerves

Question

Quizplus · Accepted Answer

The ulnar nerve innervates the 4th and 5th fingers, as well as the medial side of the hand. Damage to this nerve can result in loss of sensation and motor function in these areas. The other nerves listed do not innervate the hand or fingers.

After a Particularly Bad Forearm Break, a Person Loses Motor