| A | B |
| bone marrow | tissue in hollow bone center which makes red blood cells |
| spine | back bone made of 33 vertebrae |
| *pelvis | hip bone |
| joints | connections between bones |
| *cartilage | flexible substance which pads a joint |
| ligaments | hold joints together |
| *knee cap | patella |
| shin bone | tibia |
| thigh bone | femur |
| tendons | attaches muscles |
| arthritis | joint disease |
| discs | padding between the bones |
| bursitis | swelling of sacs containing lubricating fluid near joints |
| collar bone | clavicle |
| dislocation | joint is moved out of place |
| hernia | bulge caused by part of insides pushed through supportive muscles |
| osteoporosis | bone disease, weaking of bones |
| sprain | ligaments around joint are stretched or torn |
| *orthopedist | bone specialist |
| *CT scan | x-ray which takes many different angles of part of the body |
| *MRI (magnetic resonance imaging) | uses magnetic and radio waves to scan the body |