Learn the muscles that act on the forearm using interactive animations below and test your knowledge with labeling diagrams and worksheets. Deep layer : Supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and extensor indicis.Superficial layer : Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris and anconeus.Their primary functions are extension of the hand and supination of the forearm. The extensors of the forearm reside in the posterior compartment of the forearm. Deep layer: Pronator quadratus, Flexor digitorum superficialis, flexor digitorum profundus and flexor pollicis longus.Superficial layer: Flexor carpi ulnaris, palmaris longus, flexor carpi radialis and pronator teres The eight muscles located in the anterior compartment of the forearm can be divided into three layers - superficial, intermediate and deep 1. Part 1 aims to review the overall structure of nerves, muscles and tendons, as seen on HRUS, and that of the forearm compartments.Their main functions include flexion of the hand and pronation of the forearm. The flexors of the forearm are located in the anterior compartment of the forearm. The muscles of the forearm are divided into anterior (flexor) and posterior (extensor) compartments. Anterior Compartment of the Forearm consists of three leyers: the superficial, Intermediate and deep.
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