Which of these is not a major function of the respiratory system?
a. it aids in the sense of smell.
b. it warms and moistens the incoming air and removes particulate matter.
c. it provides a huge surface area for gas exchange between the tissue cells and the blood.
c. it provides a pathway for the movement of air from outside the body to the surface where gas exchange takes place between the air in the lungs and the blood in the pulmonary capillaries.