Muscles on the lower arm (bones: Ulna and radius, inserts on hand )
extensor carpi ulnaris, flexor carpi ulnaris, extensor carpi radialis brevis, extensor carpi radialis longus, flexor carpi radialis, abductor pollicis longus, extensor pollicis brevis, anconaeus, (both upper and lower arm: brachioradialis, extensor carpi radialis longus, pronator teres)
Muscles on hand (bones: carpus, metacarpus, phalages )
interossei dorsales, abductor digiti quinti, flexor digiti quinti brevis, opponens pollicis, adductor pollicis transversus, abductor pollicis brevis, flexor pollicis brevis, palmaris brevis(both on lower arm and hand: palmaris longus)
(from upper arm/humerus to lower arm to fingers: flexor digitorum sublimis, )
Anatomy week 05 lower arm copy from Bammes (below)