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.
Adj. 1. radial-relating to or near the radius; the radial aspect of the forearm. 2. radial-relating to or moving along or having the direction of a radius; radial velocity. 3. radial-issuing in rays from a common center; relating to rays of light; radial heat. 4.