Question

how does median nerve compression at the wrist differ from forearm compression?
forearm compression spares the thumb
wrist compression spares the forearm
compression at the wrist spares the palm
both affect the same sensory areas
view hint for question 39

Explanation:

Median nerve compression at the wrist (carpal tunnel syndrome) affects the sensory branches that innervate the palm, thumb, index, middle, and half of the ring finger, but the forearm is spared because the nerve's motor branches to forearm muscles arise proximal to the wrist. In forearm compression, the entire median nerve (including forearm branches) is affected, so the forearm is not spared. Thumb sensation is affected in both, and their sensory areas differ.

Answer:

Wrist compression spares the forearm