Question

Which of the following is the primary function of the human respiratory system?

• A. To transport oxygen to tissues and carbon dioxide to the lungs.
• B. To remove waste products from the body.
• C. To facilitate digestion and absorption of nutrients.
• D. To maintain homeostasis by regulating blood pH.

Hint:

The respiratory system works in close collaboration with the circulatory system to transport gases. Oxygen is delivered to tissues, and carbon dioxide is removed through breathing.

Answer 1

The Correct Option is A

The primary function of the human respiratory system is to exchange gases, specifically oxygen and carbon dioxide. Oxygen is taken in from the atmosphere and transported to the tissues, while carbon dioxide, a waste product of cellular respiration, is carried from the tissues to the lungs to be exhaled.
- The respiratory system includes the nose, trachea, bronchi, and lungs, which facilitate gas exchange through alveoli.
Thus, the correct answer is that the respiratory system's primary function is to transport oxygen to tissues and carbon dioxide to the lungs.