| A | B |
|---|
| Skeleton | Framework that supports & protects delicate tissues of the body |
| Matrix | Collagen fibers, protein & polysaccharides |
| osteoblasts | Cells that produce bones |
| Lucanae | Spaces in hardening matrix |
| Osteocytes | Bones cells that are trapped in the lucanae |
| Osteoclasts | Bone cells that reshape and remodel damaged bone |
| Cancellous bone | Light & spongy bone |
| Compact | Dense & heavy bone |
| Haversian Systems | Layers of ossified bone matrix |
| Haversian canal | Channel through with nutrients get to osteocytes |
| Periosteum | Membran that covers outer surfaces of bone |
| Articular surfaces | Areas where joints connect to bones |
| Endosteum | Membrane that lines the hollow interior surfaces of bones |
| Long bones | Femur, humerus, ulna |
| Nutrient foramina | Channels in large bones that contain blood vessels, lymph vessels and nerves |
| Diaphysis | Shaft of long bone |
| Epiphysis | Ends of long bones |
| Epiphyseal plates | Growth plates located between diaphysis and epiphysis |
| Short bones | Carpal and tarsal bones |
| Flat bones | skull, scapulae, pelvis |
| Irregular bones | Vertebrae, sesamoid bones, patella6 |
| Yellow marrow | Most common type of marrow in adult animals |
| Red marrow | Found in young animals, forms blood cells |
