What would happen if the trachea did not have cartilaginous rings?

Where does oxygen pass from the respiratory system to the circulatory system?

What is the first blood vessel that the oxygen will pass to?

What would happen if the trachea did not have cilia?

Which of these structures performs a function other than oxygen transportation?

Which of these answers has the structures in order from largest to smallest?

Which of these organs helps the lungs inflate?

Which of these structures does NOT help filter air?

Between which two structures does food exit the respiratory system?

Which of these answers is FALSE regarding gas exchange?

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