| A | B |
| Skeleton | Greek word meaning "a dried body" |
| Connective Tissue | Type of tissue that provides support for the body and unites its parts. |
| Periosteum | The outermost layer of bone. |
| Compact Bone | The dense layer of bone that lies beneath the periosteum. |
| Spongy bone | Porous, lightweight and strong tissue that makes up the inside of a bone. |
| Red Marrow | Type of bone marrow that produces red and white blood cells. |
| Yellow Marrow | Type of marrow that is composed of fat cells and stores energy. |
| Ossification | The hardening of cartilage into bone. |
| Joints | Places where two bones meet. |
| Ligaments | Thick connective tissue that holds bone to bone. |
| Tendons | Thick connective tissue that holds bone to muscle. |
| Cartilage | Soft, flexible, connective tissue that acts as a cushion between bones and provides a slippery surface to reduce friction. |
| Skeletal System | The system that supports and protects the body. |