Bone Tissue

1
Bone Tissue

• Osteogenic cells They differentiate into
  osteoblasts
• Osteoblasts Are the bone forming cells. They
  form organic components of matrix and help in
  mineral deposits in bone when a fracture occurs
  they speed up mitosis to repair

2
Bone Tissue

• Osteocytes are osteoblasts that become trapped
  in the matrix. They reside in cavities called
  lacunae. These cavities are connected by
  canaliculi they act like tunnels to pass
  nutrients and wastes to and from blood vessels

3
Bone Tissue

• Osteoclasts Bone-dissolving cells found the
  surface of the bone. These cells remove
  imperfections and release Ca into blood for
  cellular functions

4
Matrix

• Matrix is made of 66 hydroxyapatite, calcium
  carbonate and 33 collagen and proteins. The
  combination of the two allow bone to be ridged
  (inorganic) and flexible (organic)

5
Compact Bone

• Dense bone material, gives bone strength and
  resists strain
• Concentric lamellae layers of matrix
  concentrically arranged the haversian canal
• Haversian canal a tunnel through bone where
  blood vessels reside
• Osteon haversian canal and lamellae

6
Spongy Bone

• Filled with a lattice of matrix and collagen
  fibers called trabeculae
• Know for its sponge like appearance
• Red bone marrow most commonly found there
• Reduces weight of bone and adds flexibility

7
Marrow

• Red marrow produces blood cells
• Yellow marrow red marrow that becomes yellow as
  age increases. Yellow marrow is fat in the shaft
  of the bone can be turned into red marrow in
  stressful situations