the lungs and the respiratory system allow us to breathe.they bring oxygen into our bodies(called inspiration/inhalation)and send carbon dioxide out (called expiration/exhalation)
air enters expiratory system through the nose or the mouth.if it goes in to nostrils (also called nares),the air is warmed and humidified.tiny hairs called cilia protect the nasal passages and other parts of the respiratory tract.filtering out dust and other particles that enter the nose through the breathe air
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Answer:
the lungs and the respiratory system allow us to breathe.they bring oxygen into our bodies(called inspiration/inhalation)and send carbon dioxide out (called expiration/exhalation)
air enters expiratory system through the nose or the mouth.if it goes in to nostrils (also called nares),the air is warmed and humidified.tiny hairs called cilia protect the nasal passages and other parts of the respiratory tract.filtering out dust and other particles that enter the nose through the breathe air
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