... ll rights reserv e d 22- 13 Types of Muscle Tissue • Muscle cells – Myocytes called muscle fibers – Sarcolemma – cell membrane – Sarcoplasm – cytoplasm of cell – Myofibrils – long structures in ... e d 22- 44 Wrist, Hand, and Finger Muscles • Flexor carpi radialis and flexor carpi ulnaris – Flex and abduct the wrist • Palmaris longus – Flexes the wrist • Flexor digitorum profundus – Flexes ... rights reserv e d 22- 45 Wrist, Hand, and Finger Muscles (cont.) • Extensor carpi radialis longus and brevis – Extend the wrist and abduct the hand • Extensor carpi ulnaris – Extends the wrist...