GROSS ANATOMY

Detailed explanation-1: -The C8 nerve roots affect sensation at the pinky and ring fingers and connect to the muscles responsible for bending the fingers. Doctors will test for normal sensation and movement at these areas to determine a C8 level of injury.

Detailed explanation-2: -Sensory. The C8 nerve receives sensory afferents from the C8 dermatome. This consists of all the skin on the little finger, and continuing up slightly past the wrist on the palmar and dorsal aspects of the hand and forearm.

Detailed explanation-3: -As a sensory nerve, the ulnar nerve gives feeling to the: Pinky finger. Side of the ring finger closest to the pinky finger. Palm and back of the hand on the pinky side.