Which is not a basic function of the respiratory system?

mechanically causing air to flow into the lungs

serving as a passageway through which air can enter and leave the body

warming and moistening incoming air

exchanging carbon monoxide for oxygen

mechanically causing air to flow into the lungs

Explanation:

Air enters our nose, travels from our throat through our voice box and into the windpipe. The mechanical motions of breathing are not perpetrated by our lungs, but the other organs in our respiratory system.