1. Skeletal System

2. 5 Functions of the skeletal system
Support – internal framework of the body
Protection – of soft tissues inside body cavities (cranium, thoracic)
Movement – with muscles
Storage – calcium
Hematopoiesis - process of blood cell formation

3. 4 types of bones Long – femur Short – carpals Flat – frontal bones
Irregular - vertebrae

4. Structure of the Long Bone
Diaphysis
Medullary cavity
Epiphyses
Articular cartilage
Periosteum
endosteum

5. Spongy bone versus compact bone

6. Osteon – Haversian system
Trabeculae
Lamella
Central Canal
Lacunae
Canaliculi

7. Chondrocytes – cartilage cells

8. Osteocytes, Osteoblasts, Osteoclasts
Osteocytes – mature bone cells, found in lacunae
Osteoblast – form new bone, active bone building cells
Osteoclasts – remove bone, bone absorbing (resorbing) cells

9. Endochondral Ossification
Cartilage to Bone

10. Epiphyseal Plate versus Line

11. Axial versus Appendicular Skeleton
Axial – skull, spine, thoracic cavity
Appendicular – upper and lower extremities (appendages)
Pectoral and pelvic girdles