Which sensory function is primarily evaluated through tests on the forearm and hand?

The evaluation of sensory function through tests on the forearm and hand encompasses multiple nerve pathways, specifically those of the ulnar, median, and radial nerves.

Each of these nerves innervates distinct regions of the forearm and hand and is responsible for different sensory functions.

The ulnar nerve, for instance, is primarily involved in sensation to the ring and little fingers on the hand, as well as some parts of the palm. The median nerve is responsible for sensations in the thumb, index, middle finger, and part of the ring finger. The radial nerve provides sensation to the back of the hand and contributes to the dorsal side of the thumb and parts of the index and middle fingers.

Conducting sensory tests on the forearm and hand allows healthcare professionals to assess the integrity and function of all three of these critical nerves simultaneously. Therefore, when one evaluates sensory function in this anatomical region, it involves assessing the contributions of the ulnar, median, and radial nerves collectively. This comprehensive approach is why all the options relate to the question and indicate that multiple nerve functions are evaluated during such tests.