| A | B |
|---|
| biceps brachii | upper arm; flexes lower arm |
| triceps brachii | upper arm; extends lower arm |
| deltoid | upper arm; injection site |
| trapezius | upper back and neck; moves shoulder |
| sternocleidomastoid | side of neck; turns and flexes head |
| hamstrings | back of thigh; flexes the knee and extends the hip |
| pectoralis major | upper chest; abducts upper arm |
| gluteus maximus | buttocks; extends thigh, injection site |
| gastrocnemius | back of lower leg; fexes sole of foot |
| tibialis anterior | front of lower leg; flexes and inverts foot |
| intercostals | between ribs; moves ribs for breathing |
| rectus abdominus | ribs to pubis (pelvis); compresses abdomen |
| latissimus dorsi | spine around to chest; extends and adducts upper arm |
| sartorius | front of thigh; abducts thigh, flexes leg |
| quadriceps femoris | front of thigh; extends leg |
| masseter | in cheek; aids in mastication (chewing) |
