Question

Which of the following is removed in large quantity from our body by lungs?

• A. CO2 only
• B. Bile
• C. CO2 and H2O
• D. Ammonia

Answer 1

The correct option is A

CO2 only

Your lung's main purpose is to collect oxygen for your body to use and then to eliminate carbon dioxide. When you inhale fresh air, the oxygen enters the blood vessels that surround your alveoli, the site of gas exchange in the bronchioles of your lungs. The oxygen circulates in your body, gets used up, and carbon dioxide is the result. The carbon dioxide then travels with your blood back to your lungs and is diffused to the alveoli, where it is exhaled.