The tensile strength of the wound starts and increase after –
Correct Answer: 7 to 10 days
Description: The strands of collagen give bone its tensile strength, and the interspersed crystals of hydroxyapatite give bone its compressional strength. These effects are synergistic.
Bone components are:-
Inorganic elements (65%)
Organic matrix (35%)
Inorganic elements :
It is the mineral phase, principally composed of calcium and phosphate, mostly in the form of hydroxyapatite .
Organic matrix :
Organic matrix consists of cells of bones and protein of matrix. This unmineralized matrix is called osteoid, i.e. unmineralized bone is known as osteoid. Osteoid with mineral (i.e. mineralized osteoid) is complete bone.
a. Protein of matrix:
It is mainly formed by type I collagen and a family of noncollagenous proteins like osteocalcin and osteonectin that are derived mainly from osteoblasts.
b. Cells of the matrix:
The cells of bone are
Osteoblasts
Osteoclasts
Osteocytes
Category:
Pathology
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