| A | B |
|---|
| ligament | connects bone to bone |
| tendon | connects muscle to bone |
| cartilage | cushions the joints, also found in ears, noses and embryos |
| bone marrow | source of red blood cells |
| ball and socket | type of joint found at the shoulder; greatest range of motion |
| hinge | one direction; type of joint found at the elbow and knee |
| fixed | immovable; type of joint found in the skull |
| 206 | number of bones in the human body |
| gliding | bones slide past each other; joint found in the wrist and foot |
| function of bones | protection, anchorage for bones, making red blood cells, structure |
| skeletal muscles and bones | needed for locomotion in humans |
| cardiac muscle | heart muscle |
| voluntary muscles | muscles you can control |
| involuntary muscles | muscles that control body functions that you don't have to think about |
| exoskeleton | hard outer covering of insects and crustaceans |
| endoskeleton | skeletal structure found in humans |
| joint | where bones meet |
| pivot | type of joint with rotational motion (elbow) |
