Which one of the following is a function of cartilage? See Section 32.2 (Page 610) . A) Cartilage forms a matrix hardened by deposits of calcium phosphate. B) Cartilage provides the supporting framework for the respiratory passages. C) Cartilage provides a framework for organs such as the liver. D) Cartilage is a specialized form of blood and lymph. E) Cartilage is produced and secreted by exocrine glands.

Cartilage is a type of connective tissue with rigid but flexible consistency. Its function is to coat joints, dampen the friction between bones and provide support for some parts of the body.

Its matrix is not hardened by deposits of calcium like bone tissue, so alternative A is incorrect.

Cartilage is not present in organs such as liver, so alternative C is incorrect.

Cartilage is not a blood or lymph type, so alternative D is incorrect.

Cartilage is formed from embryonic mesenchymal cells and not produced by exocrine glands, so alternative E is incorrect.

Cartilage plays an important role in the structure of respiratory system organs such as the nose, trachea and larynx. Alternative B is correct.