| A | B |
|---|
| origin | point of attachment of a muscle at its more stationary end |
| insertion | point of attachment of a muscle at its more movable end |
| agonist (prime mover) | major muscle causing a desired action |
| synergist | muscle working with the prime mover in creating an action |
| antagonist | muscle that has an action opposite the prime mover |
| action of biceps brachii | causes flexion of the forearm |
| action of triceps brachii | causes extension of the forearm |
| vastus lateralis | part of the quadriceps femoris group |
| semitendinosus | part of the hamstring group |
| action of deltoid | abducts the shoulder |
| location of latissimus dorsi | lower back muscle |
| location of trapezius | upper back muscle |
| action of pectoralis major | flexes the upper arm and adducts it anteriorly |
| action of tibialis anterior | dorsiflexes the foot |
| action of gastrocnemius | plantar flexes the foot |
| Achilles tendon | attaches the calf muscles to the calcaneus |
| location of gluteus maximus | buttock muscle |
| action of orbicularis oculi | squints the eye |
| action of masseter | closes the jaw |
| action of sternocleidomastoideus | flexes the neck and turns the head to the side |
| action of orbicularis oris | puckers the lips |
| action of frontalis | raises eyebrow |
| action of rectus abdominus | flexes trunk |
| action of flexor carpi mm | flexes hand and wrist |
| group of biceps femoris | hamstring |
| insertion of biceps brachii | radial tuberosity |
| insertion of gastrocnemius | calcaneus |
| insertion of latissimus dorsi | humerus |
| insertion of sternocleidomastoideus | mastoid process |
| insertion of triceps brachii | olecranon process of ulna |
