Abraham Lincoln: The Man and the Myth. Fort Worth: Harcourt College Publishers, 2000. Bartlett, D. W. (David W.). Life and Public Services of Hon. Abraham Lincoln, With a Portrait on Steel, to Which is Added a Biographical Sketch of Hon. Hannibal Hamlin.
Two special motions produced by the muscles of the forearm are the supination (anterior rotation) and pronation (posterior rotation) of the forearm and hand. Supination is produced by the biceps brachii of the upper arm and the supinator muscle of the forearm.uscles of the Arm and Hand. The muscles of the arm and hand are specifically designed to meet the bodyâs diverse needs of strength, speed, and precision while completing many complex daily tasks.
The biceps muscle is located in the front of the upper arm, and is used when lifting, bending the elbow, and reaching up over the head. The upper portion of the biceps muscle attaches to the front of the shoulder in two places, and the lower portion attaches to a bone in the forearm (figure 1). Lifting, pulling, reaching, or throwing repeatedly can lead to biceps tendinopathy or even tears of the upper biceps tendon.