1) what is the function of the respiratory system? a) It helps us move b) It moves air into and out of the lungs 2) Which is one part of the respiratory system a) nose b) leg 3) Which muscle does the lungs use to exhale and inhale? a) Tongue b) Diaphragm 4) What does the respiratory system help the blood and the lungs exchange? a) water b) gas

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