Human Body Systems

• ECM is made up of what two components= inorganic molecules and organic molecules
• Inorganic= calcium minerals
• organic= mainly collagen
• 4 types of bone cells= osteogenic, osteoblasts, osteocytes, osteoclasts
• osteogenic= stem cells that produce osteoblasts
• osteoblasts= make bone matrix
• osteoclasts= destroy old bone
• osteocytes= recycle protein and minerals
• 6 parts of compact bone= foramina, osteon, central canal, lamellae, lacunae, canaliculi