1. Skeletal system
Chapter 5

2. Skeletal system functions

3. Skeletal system components
bone

4. Bones classified by shape
long
short
flat
irregular

5. Bone histology
Organic component
Inorganic components

6. Bone cells
osteoblasts
osteocytes
osteoclasts

7. Compact bone
osteon

8. Compact bone

9. Spongy bone
has trabeculae

10. Anatomy of a long bone Diaphysis Epiphyses (sing. epiphysis)
Epiphyseal line (growth plate)

11. Bone development (ossification)

13. Developmental growth
Elongation of long bones

14. Bone homeostasis: remodeling
new bone formation & reabsorption (destruction)

15. Bone homeostasis: remodeling may be under hormonal control
goal is to maintain proper blood Ca2+ levels

16. Bone homeostasis: repair of fractures, what happens?
hematoma forms
cartilaginous callus forms
bony callus forms
remodeling of bone

17. Bone homeostasis: repair of fractures, what happens?

18. Homeostatic imbalances of bone
Osteoporosis

19. Homeostatic imbalances of bone
Osteomalacia

20. Pathologies
Fibrodysplasia ossificans progressiva

21. Divisions of skeletal system

22. Joint basics

23. Joint classification
Three broad categories

24. Synovial joint structure

25. Stability of synovial joints

26. Stability of synovial joints
ligaments

27. Joint disorders Degenerative changes: arthritis osteoarthritis
rheumatoid arthritis

28. Joint disorders