| A | B |
|---|
| Skeletal system | framework of bones in your body |
| Solid bone | compact or hard part of the bone |
| Spongy bone | spacious areas found in this bone; usually at the ends of bones |
| Ligament | connects bone to bone |
| Hinge joint | Allows movement only forward and backward;elbow,knee |
| Ball-and-socket joint | allows greatest range of motion; shoulder |
| Fixed joint | allow no movement |
| Arthritis | disease of the joints |
| Muscular system | includes all muscles in the body |
| Skeletal muscle | muscles that move bones of the skeleton; voluntary |
| Voluntary muscle | can control the movement |
| Cardic muscle | muscle that makes up the heart; involuntary |
| Involuntary muscle | can not control the movement |
| Smooth muscle | muscle found in blood vessels, intestines, and other boday organs; involuntary |
| Tendon | connects muscle to bone |
| Sprain | injuries that occur to ligaments at a joint |
| Muscular dystrophy | collection of diseases which cause muscles to decompose |
