Where are the alveoli located in the human body? 

It is released as waste during exhalation

What happens to carbon dioxide in the alveoli? 

Exchange of gases between the blood and tissues

Exchange of gases between the alveoli and the bloodstream

Exchange of gases between the stomach and the bloodstream

Exchange of gases between the brain and the bloodstream

By controlling the diameter of blood vessels in the lungs

By adjusting the concentration of surfactant in the alveoli

By responding to changes in carbon dioxide levels in the blood

Test your knowledge of  alveoli and pulmonary gas exchange.