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Respiratory system

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.
Created by: smartandsexy