Question

Numbness to the skin on the lateral half of the palm of the hand would be caused by a lesion to which nerve?

a) Ulnar nerve
b) Radial nerve
c) Median nerve
d) Brachial plexus

Answer 1

Numbness to the skin on the lateral half of the palm of the hand is caused by a lesion to the Median nerve, which runs through the carpal tunnel in the wrist and provides sensation to the thumb and first two fingers of the hand.

Step-by-step explanation:

When there is numbness to the skin on the lateral half of the palm of the hand, it is caused by a lesion to the Median nerve. The Median nerve runs through the carpal tunnel in the wrist and provides sensation to the thumb and first two fingers of the hand. Compression of this nerve can result in pain, numbness, and tingling in these digits.