Identify the nonprimary function of the respiratory system. A) Filter out inhaled contaminants, various chemicals, and small blood clots. B) Exchange of gases between blood and tissues. C) Continuous absorption of O₂ and excretion of carbon dioxide. D) Transport oxygenated blood to the tissues.

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Quizplus · Accepted Answer

The primary role of the respiratory system is breathing, external respiration (the continuous absorption of O₂ and the excretion of carbon dioxide), and the support of internal respiration, which is the exchange of gases between blood and tissues. The respiratory system is also equipped to filter out inhaled contaminants, while warming and humidifying inspired gas and simultaneously filter out various chemicals and small blood clots that are deposited or formed in the blood.

Identify the Nonprimary Function of the Respiratory System