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Bones & Bone Tissue - Anatomy & Physiology

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  • Osteoblasts

    Osteoblasts are cells that build bone.

  • Osteoclasts

    Osteoclasts are cells that break down bone.

  • Osteocytes

    Osteocytes are cells that maintain bone.

  • Osteogenic cells

    Osteogenic cells are stem cells that become osteoblasts.

  • Structural unit of compact bone

    The osteon is the structural unit of compact bone.

  • Central canal

    The central canal contains blood vessels and nerves.

  • Lacunae

    Lacunae are small spaces that contain osteocytes.

  • Canaliculi

    Canaliculi are tiny channels connecting lacunae.

  • Concentric lamellae

    Concentric lamellae are rings of bone matrix surrounding the central canal.

  • Organic bone matrix

    The organic bone matrix is made of collagen fibers.

  • Inorganic bone matrix

    The inorganic bone matrix consists of calcium phosphate salts.

  • What gives bone flexibility?

    Collagen fibers give bone its flexibility.

  • What gives bone hardness?

    Calcium phosphate salts give bone its hardness.

  • Compact bone

    Compact bone is the dense outer bone made of osteons.

  • Spongy bone

    Spongy bone is the internal bone containing trabeculae.

  • Trabeculae

    Trabeculae are lattice-like structures in spongy bone.

  • Red bone marrow function

    Red bone marrow functions in blood cell production.

  • Diaphysis

    Diaphysis is the shaft of a long bone.

  • Epiphysis

    Epiphysis is the end of a long bone.

  • Periosteum

    Periosteum is the outer covering of bone.