1. Sarcolemma
2. sarcoplasmic reticulum
3. z line
4. i band
5. a band
6. Thin filaments (actin)
7. Thick filaments (myosin)
8. H zone of sarcomere
, 9. triceps brachii
10. biceps brachii
11. rectus femoris
12. Deltoid
13. pectoralis major
14. gluteus maximus
2. sarcoplasmic reticulum
3. z line
4. i band
5. a band
6. Thin filaments (actin)
7. Thick filaments (myosin)
8. H zone of sarcomere
, 9. triceps brachii
10. biceps brachii
11. rectus femoris
12. Deltoid
13. pectoralis major
14. gluteus maximus