The document describes the functions of 10 muscles: 1) Biceps brachii flexes the arm and rotates the hand laterally. 2) Brachialis flexes the arm. 3) Brachioradialis flexes the arm. 4) Supinator rotates the forearm laterally. 5) Pronator teres rotates the arm medially. 6) Pronator quadratus rotates the arm medially. 7) Flexor carpi radialis flexes and abducts the wrist. 8) Flexor carpi ulnaris flexes and adducts the wrist. 9) Palmaris longus flexes the wrist. 10) Extensor carpi