The collagen fibers of bone are hardened by deposit of:
Correct answer: A. Calcium phosphate
- A. Calcium phosphate
- B. Calcium carbonate
- C. Calcium oxalate
- D. Calcium bicarbonate
Explanation
Explanation:The collagen fibers of bone are hardened by the deposition of calcium phosphate, which forms the mineral component of bone tissue known as hydroxyapatite.This option is incorrect. Calcium carbonate is a mineral that is found in some types of rocks and the shells of marine organisms, but it is not a major component of bone tissue.Calcium oxalate is a compound that can form crystals in the urinary tract, but it is not involved in the hardening of bone tissue.Calcium bicarbonate is a compound that is formed when carbon dioxide dissolves in water, but it is not involved in the hardening of bone tissue.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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