| A | B |
|---|
| Flex the elbow | Biceps brachii; Brachialis; Brachioradialis |
| Extend the elbow | Triceps bracii (all heads); Anconeus |
| Supinate the forearm | Biceps bracii; Supinator |
| Pronate the forearm | Pronator Teres; Pronator Quadratus |
| Extend the wrist | Extensor Carpi Radialis Longus; Extensor Carpi Radialis Brevis; Extensor carpi ulnaris |
| Flex the wrist | Flexor carpi radialis; Flexor carpi ulnaris; Palmaris longus; Flexor Digitorum Superficialis |
| ABduct the wrist (radial deviation) | Extensor Carpi Radialis Longus; Extensor Carpi Radialis Brevis; Extensor pollicis longus; Extensor pollicis brevis; Flexor carpi radialis; Abductor pollicis longus |
| ADduct the wrist (ulnar deviation) | Extensor carpi ulnaris; Flexor carpi ulnaris |
| Extend 2nd – 5th fingers | Extensor digitorum |
| Flex 2nd – 5th fingers | Flexor digitorum superficialis; Flexor digitorum profundus |
| Flex the thumb | Flexor pollicis longus, Flexor pollicis brevis |
| Extend the thumb | Extensor pollicis longus, Extensor pollicis brevis, Abductor pollicis longus |
| Adduct the second finger | Extensor Indicis |
| Assists to flex the elbow | Flexor carpi radialis; Flexor carpi ulnaris; Palmaris longus; Pronator Teres; Extensor Carpi Radialis Longus; Extensor Carpi Radialis Brevis |
| Assists to supinate the forearm | Brachioradialis |
| Assists to pronate the forearm | Brachioradialis |
| Assists to extend the wrist | Extensor Digitorum; Extensor Indicis |
| Assists to flex the wrist | Flexor digitorum profundus; Flexor pollicis longus |
| Assists to flex the thumb | Adductor pollicis |
