The musculocutaneous nerve is the largest of all the cranial nerves. It controls the arm and shoulder muscles. The main function of these muscles is to act as the major components of our muscular system. Muscles work together in order to allow us to move freely. Muscles control our arm movements, and they also control…
The coracobrachialis, also known as the rotator cuff, is a small, thin muscle that originates behind the coracobrachialis (the white area on the shoulder). The tendon muscle runs inferolaterally to the sternum. They insert onto the coracoderm’s anteroposterior surface, near the acromion. The tendon is found generally between the front of the clbumere, and the…
The anatomical snuff box (or the radicular fold), is a long, triangular depression shaped on the outer side of your hand just below the first joint of your thumb. It’s located at the upper part of the carpal bones above the pinky finger. It’s best seen when the middle finger is depressed. In olden days,…
The lumbricals are large, deep muscles of the upper arm that extends the glenohumeral joints to the scapula and flex the metatarsal joints at the wrist. It has two, small, ring shaped muscles in each of the forearms, located on each side of the ulnar loop. These muscles are important for maintaining proper posture and…