OSSEOUS TISSUE ORGANIZATION
Bone (Osseous) Tissue Characteristics
 Dense matrix, supportive connective tissue
 Majority is solid matrix of calcium phosphate,
Ca3(PO4)2
 Around collagen fibers (approx. 25% collagen)
 Osteocytes within lacunae organized around
blood vessels
Organization of Compact Bone Tissue
 Osteon is basic unit
of mature compact
bone
 Osteocytes are
arranged in
concentric lamellae
 Around a central
canal (Haversian
canal) containing
blood vessels
Perforating Canals
 Also called horizontal canals or Volkmann’s
canals)
 Perpendicular to the central canal
 Carry blood vessels into bone and marrow
Concentric Lamellae
(plate-like membrane)
• wrapped around the entire
long bone
• Binds osteons together
Spongy Bone Tissue
 No organized osteons
 The matrix consists of
trabeculae which are
strands of bone that
make up an irregular
“meshwork” / “lattice work”
with spaces
Spongy Bone Tissue
 The space between
trabeculae is filled with red
bone marrow:
 Which forms red blood cells
and supplies nutrients to
osteocytes
• In some bones, spongy bone holds
yellow bone marrow (stores fat)