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Respiratory system
Question | 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. |
nose | two openings that are called nostrils or nares through which air enters. |
nasal septum | A wall of cartilage |
nasal cavities | Two hollow spaces that are lined with a mucous membrane and have a rich blood supply. |
Cilia | Tiny, hairlike structures that filter inhaled air to trap dust and other particles. |
Sinuses | cavities in the skull that surround the nasal area. They are lined with a mucous membrane that warms and moistens air. |
Pharynx | (throat) lies directly behind the nasal cavities. three sections- nasopharynx, oropharynx, and laryngopharnyx. |