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The air we breathe enters the body thru the ___1___ and goes to the passageway for both food and air called the Pharynx and Larynx. Then air reaches the ___2___ that connected to the 2 tubes called ___3___ that carry air into the lungs; It is branched smaller tubes called bronchioles. The air now goes to the ___4___ where exchange of gasses happen. The breathing mechanism happens as the __5___ contracts and relaxes.​

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Answer:

Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx. The entrance to the larynx is covered by a small flap of tissue (epiglottis) that automatically closes during swallowing, thus preventing food or drink from entering the airways.

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