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Nostril - Definition


Definition

External orifices of the nose, the nostrils are formed by muscle membranes that provide them the opportunity to open and retract. Supported by the alar cartilages, also called the nose, the nostrils perform several functions. In addition to ensuring the passage of air inspired, nostrils play an essential role in the perception of odors, in the humidification and warming of the inhaled air. Some diseases such as influenza or the common cold can cause inflammation of the nostrils. Note that treatments in the form of drops or sprays are sometimes administered through the nostrils.

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