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.
Confidence votes 191. Extrinsic muscles are voluntary muscles,external to the eye, that control the direction the eye moves in e.g looking left or right. Intrinsic muscles are within the eye, such as those that control the size of the pupil. Intrinsic muscle is not under voluntary control. Extrinsic muscles are voluntary muscles,external to the eye, that control the direction the eye moves in e.g looking left or right. Intrinsic muscles are within the eye, such as those that control the size of the pupil.