Asked in UHS MDCAT 2009 2009Moderate

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.

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