Rigidity
Calcium Salts
Hydroxyapatites
Collagen
Hardness

Collagen

Hematopoiesis
Red marrow
Yellow marrow
Spongy bone
Diploe

Yellow marrow

Lamellae
Cellular extensions
Canaliculi
Circulation
Osteoclasts

Osteoclasts

Osteon
Marrow cavity
Volkmann's canals
Haversian canal
Canaliculi

Marrow cavity

Epiphysis
Articular cartilage
Periosteum
Hyaline cartilage

Periosteum

Perichondrium
Periosteum
Appositional grown
Osteoblasts

Perichondrium

Spongy
Cancellous
Woven
Lamellar
Trabecular

Lamellar

Bone deposit
Injury site
Growth zones
Repair sites
Bone resorption

Bone resorption

Osteoid
Organic matrix
Calcium salts
Osteoblasts
10 um wide

Calcium salts

Hypercalcemia
Hypocalcemia
Calcium
Salt deposit in soft tissue
Ca2+ over 11 mg/100 ml blood

Hypocalcemia

Mechanical forces
Gravity
Muscle pull
Blood calcium levels
Wolff's law

Blood calcium levels

Growth in diameter
Growth in lenght
Appositional growth
Increase in thickness

Growth in length