Respiratory system
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Respiratory system | the lungs and the air passages. takes in oxygen and removes carbon dioxide which is a gas that is a metabolic waste product produced by the cells when the cells convert food into energy.
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| nose | two openings that are called nostrils or nares through which air enters.
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| nasal septum | A wall of cartilage
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| nasal cavities | Two hollow spaces that are lined with a mucous membrane and have a rich blood supply.
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| Cilia | Tiny, hairlike structures that filter inhaled air to trap dust and other particles.
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| Sinuses | cavities in the skull that surround the nasal area. They are lined with a mucous membrane that warms and moistens air.
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| Pharynx | (throat) lies directly behind the nasal cavities. three sections- nasopharynx, oropharynx, and laryngopharnyx.
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