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    Respiratory System

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    The upper respiratory tract (upper airway) consists of the nose, mouth, sinuses, and throat.

    The lower respiratory tract consists of the trachea, bronchial tubes, and the structures inside the lungs.

    ByHealthwise Staff
    Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
    Specialist Medical ReviewerW. David Colby IV, MSc, MD, FRCPC - Infectious Disease

    Current as ofSeptember 9, 2014

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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