Which nerve supplies sensation to the fingers?

The digital nerve is responsible for supplying sensory innervation to the fingers. It branches from the median and ulnar nerves and runs along the fingers, allowing a person to perceive touch, temperature, and pain in this area. This nerve is essential for the functionality of the fingers, as it facilitates the ability to feel and react to different stimuli.

While the median and ulnar nerves also play significant roles in the hand's anatomy, they primarily serve as larger pathways for nerve signals and motor functions in addition to some sensory functions. The radial nerve, on the other hand, mainly supplies the posterior side of the arm and hand, focusing more on the back of the hand and thumb rather than directly innervating the fingers for sensation. Thus, the digital nerve is specifically the correct choice when discussing sensation in the fingers.