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Chapter 9
Anatomy
| Muscles | Function |
|---|---|
| sternocleidonmastoid (located in neck) | flexes head |
| trapezius (located in back) | extends upper arm |
| latissimus dorsi (located in back) | extends upper arm |
| external oblique (located in abdominal wall) | compresses abdomen |
| deltoid (shoulder) | abducts upper arm |
| pectoralis major (shoulder) | abducts upper arm |
| serratus anterior (shoulder) | abducts upper arm |
| biceps brachii (upper arm) | flexes forearm |
| triceps brachii (upper arm) | extends forearm |
| brachialis (upper arm) | flexes forearm |
| brachioradialis (forearm) | flexes forearm |
| pronator teres (forearm) | pronates, flexes forearm |
| gluteus maximus (buttocks) | extends thigh |
| gluteus minimus (buttocks) | abducts thigh |
| gluteus medius (buttocks) | abducts thigh |
| rectus femoris part of the quadriceps femoris group (anterior surface of thigh) | flexes thigh |
| vastus lateralis part of the quadriceps femoris group (anterior surface of thigh) | extends leg |
| vastus medialis part of the quadriceps femoris group (anterior surface of thigh) | extends leg |
| vastus intermedius part of the quadriceps femoris group (anterior surface of thigh) | extends leg |