Definitions for "Respiratory tract"
The entire system of air passages involved in breathing, especially the trachea, bronchial tubes, bronchioles, and alveoli.
The respiratory tract consists of the lungs and a series of air passages leading to and from the lungs. These passages are divided into the conducting portion (nasal cavities, pharynx, larynx, trachea, bronchi, and the bronchioles) and the respiratory portion (where gas exchange occurs between air and blood. It consists of the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.
The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs. Also called the respiratory system.