1.  The Skeletal System

2. Parts of the skeletal system  Bones (skeleton)  Joints  Cartilages  Ligaments

4. Two subdivisions of the skeleton  Axial skeleton  Appendicular skeleton

5.  Adult skeleton approximately 206 bones  Axial: 80 bones  Appendicular: 126 bones

6. Functions of bones

7. Two basic types of bone tissue  Compact bone  Homogeneous  Spongy bone  Many open spaces

8. Classification of Bones based on Shape

12. Anatomy of a Long Bone  Epiphysis  Ends of the bone  Composed mostly of spongy bone

13. Anatomy of a Long Bone

14.  Epiphysis  Ends of the bone  Composed mostly of spongy bone

15. Anatomy of a Long Bone  Periosteum  Outside covering of the diaphysis  Fibrous connective tissue membrane  Sharpey ’ s fibers  Secure periosteum to underlying bone  Arteries  Supply bone cells with nutrient

16. Anatomy of a Long Bone