MID TERM REVIEW

Compact vs. Spongy Bone

Homeostasis of Bone Tissue

Intramembranous Ossifiction

Endochondral Ossification

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.

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

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

Breakdown of Skeletal Muscle

Neuromuscular Junction Animation

Cross Bridge Animation