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 brachioradialis is a superficial, fusiform muscle on the lateral side of the forearm that attaches proximally on the lateral supracondylar ridge of the humerus and distally on the radius, close to its styloid process.Near the elbow, it forms the lateral limit of the cubital fossa, or elbow pit.he brachioradialis is a stronger elbow flexor when the forearm is in a midposition between supination and pronation at the radioulnar joint. When pronated, the brachioradialis is more active during elbow flexion since the biceps brachii is in a mechanical disadvantage.