Marta is an editor and she spends a great deal of time typing on her computer. She begins to feel numbness and tingling in her anterior and lateral hands and weakness in the muscles of her forearm that flex her hand. What nerve is likely involved in her problem, and what do you think has happened

Median nerve is likely involved in her problem.

Martha likely has carpal tunnel syndrome. This syndrome is a result of the median nerve being compressed by the flexor retinaculum due to overuse. The compression of the nerve causes weakness in the muscles supplied by the median nerve and sensory deficits in the parts of the skin that it innervates.

sorry, but you do not have posted the diagram.