★ Respiratory System Quiz
What happens when your diaphragm relaxes and moves upward?
A. Your lungs deflate and you breathe out.
B. Your lungs inflate and you breathe in.
C. Your alveoli transfer oxygen to your bloodstream.
D. Your bloodstream transfers carbon dioxide to your alveoli.
Preview next quiz:
Which of the following does NOT make up part of the lungs?
A. Alveoli
B. Bronchioles
C. Trachea
D. Bronchi
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