Medical Quiz

Breathing System Quiz

What is the percentage of oxygen in exhaled air?

A. 78%

B. 14%

C. 5%

D. Variable

Select your answer:
     


Preview next quiz:

What is the function of the alveoli?

A. To carry air to and from the lungs

B. To warm and moisten the air

C. To trap dirt particles and bacteria

D. To exchange gases with the blood



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