Dr.Nitin Kaushik Junior Resident Dept. of Orthopedics

ESIPGIMSR MGM Hospital

Bone (osseous) Connective Tissue Cells

Osteoprogenitor cells (stem cells) Osteoblasts Osteocytes (in lacunae) Osteoclasts

Matrix

Matrix: arranged as lamellae Collagen fibersCalcium phosphate salts (as hydroxyapatite)

Matrix: arranged as lamellae

Arrangements of Bone Tissue Compact (cortical) Spongy (cancellous)

Compact Bone Tissue Location

On bone surfaces (matrix arranged as circumferential lamellae)

In shafts of long bones (matrix arranged as concentric

The osteon (Haversian system):

The osteon (Haversian system): unit structure of thick compact bone

Haversian canal

Lacuna

Canaliculi

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Arrangements of Bone Tissue Compact Bone Tissue Spongy (cancellous) bone tissue

Location: within bones Consists of branching plates called

trabeculaeBone marrow found between the

trabecular spaces

Periosteum

Periosteum Fibrous layer Cellular layer