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.
These extrinsic eye muscles are some of the fastest contracting and most precisely controlled skeletal muscles in the human body and function as Agonist & Antagonists pairs to move the eyeball. 1  Superior and Inferior Rectus Muscles, 2  Lateral and Medial Rectus Muscles,hese muscles are called extrinsic eye muscles because their origin points are outside of the eyeballs (in the orbit) and insertion points are on the outer surface of the Sclera.