Muscles -- Back View (muscular system)

Each of your muscles is made up of thousands of thin, long, cylindrical cells called muscle fibers. The muscle fibers' highly specialized structure enables the muscles to relax and contract to produce movement. Muscles vary greatly in their shape and size, depending on their function.

showing:
1. trapezius muscle
2. deltoid muscle
3. infraspinatus muscle
4. teres major muscle
5. teres minor muscle
6. triceps muscle
7. latissimus dorsi muscle
8. extensor carpi radialis longus muscle
9. extensor carpi radialis brevis muscle
10. flexor capri ulnaris muscle
11. extensor digitorum muscle
12. extensor carpi ulnaris muscle
13. abductor pollicis longus muscle
14. extensor pollicis brevis muscle
15. gluteus medius muscle
16. gluteus maximus muscle
17. adductor magnus muscle
18. biceps femoris muscle
19. semitendinous muscle
20. gracilis muscle
21. semimembranous muscle
22. vastus lateralis muscle
23. sartorius muscle
24. gastrocnemius muscle
25. peroneus longus muscle
26. flexor hallicis longus muscle

Source: AMAs Current Procedural Terminology, Revised 1998 Edition. CPT is a trademark of the American Medical Association