Fluctuat nec mergitur - Free definition results from over 1700 online dictionaries
The radial nerve innervates muscles located in the arm and forearm. In the arm, it directly innervates the three heads of the triceps brachii. This muscle performs extension at the elbow. In the forearm, the deep branch of the radial nerve innervates the muscles in the posterior compartment of the forearm.o enter the forearm, the radial nerve moves anteriorly over the lateral epicondyle of the humerus, through the cubital fossa. Within the forearm, the nerve terminates by dividing into two branches: 1  Deep branch â A motor branch.
The radial nerve is a nerve found in the human arm. This is the nerve responsible for providing the nerve supply to the forearm as well as the posterior compartment of the arm, also called the extensor compartment.This compartment holds the muscles that are supplied by the radial nerve.his is the muscle that makes it possible to straighten the arm. The radial nerve begins at the structure known as the brachial plexus. This is a network of nerve fibers traveling from the spine and into the neck, armpit region, and then into the arm.