| Term | Definition |
|---|---|
| Excitability | ability to respond to a stimulus |
| Extensibility | ability to be stretched |
| contract | ability to become short and thick |
| elasticity | ability to return to its original shape |
| flexion | decreasing the angle between two bones |
| circumduction | swinging the arm around in a circle |
| ADDuction | moving a body part toward the midline |
| Flexion | bending the lower arm up toward the upper arm |
| ABDuction | moving the arm away from the side of the body |
| Extension | straightening the lower leg away from the upper leg, increasing the angle between two bones |
| Rotation | turning a body part on its own axis |
| ABDuction | moving the leg in toward the body |
| Rotation | turning the head from side to side |
