Which of the following systems is involved in air exchange in the body?

The respiratory system is the primary system involved in air exchange in the body. This system is responsible for the intake of oxygen and the expulsion of carbon dioxide, crucial processes for maintaining the body’s metabolism. The main structures of the respiratory system include the nasal passages, trachea, lungs, and diaphragm.

When air is inhaled, oxygen enters the lungs, where it diffuses into the bloodstream and is used by cells for energy production. Simultaneously, carbon dioxide, a waste product of cellular respiration, travels from the blood into the lungs and is expelled when exhaling. This exchange of gases is essential for sustaining life, making the respiratory system vital for proper bodily function.

Though other systems play supporting roles, such as the circulatory system transporting oxygen and carbon dioxide in the blood, it is the respiratory system that directly facilitates the air exchange process.