1. MID TERM REVIEW

2. Compact vs. Spongy Bone

3. Homeostasis of Bone Tissue

4. Intramembranous Ossifiction

5. Endochondral Ossification

6. Growth of Bones Epiphyseal disk – area of growth; separates epiphysis
from diaphysis; 4 layers:
1. Resting cells – closest to
end; do not add length but
act as anchor
2. Reproducing cells -
as they reproduce, they
lengthen the bone 1.

7. Growth of Bones 3. Mature cells – growing and accumulating Ca
4. Degenerating cells &
osteoblasts depositing
bony tissue

8. Fracture Repair 4 stages
Blood escapes from blood vessels and from hematoma.
Spongy bone forms near blood vessels, fibrocartilage forms in distant regions (within days to weeks)
Bony callus forms from cartilaginous callus similar to bone formation
Osteoclasts remove excess bone to restore to original

9. Breakdown of Skeletal Muscle

11. Neuromuscular Junction Animation

13. Cross Bridge Animation