respiratory tract n.
The air passages from the nose to the pulmonary alveoli, including the pharynx, larynx, trachea, and bronchi.
Throughout, the respiratory tract is lined with mucous membrane.
This condition exists in any serious disease of the respiratory tract, as pneumonia, and in heart failure.
It is frequently associated with inflammatory diseases of the respiratory tract, such as laryngitis and bronchitis or pleurisy.
Cultures were inoculated with specimens from respiratory tract, blood and tissue taken from both sick and well.
They contain the fasciculus described, by Sir Charles Bell, as the respiratory tract.
Catarrhal affection of the conjunctiva, the mucous membrane of the respiratory tract, and the nose.
Thick wind is caused by an obstruction to the free passage of the air in some part of the respiratory tract.
The whole of the respiratory tract as far as the air-cells is lined by mucous membrane.
The cough is not painful, as a rule, in the chronic diseases of the respiratory tract.
As we have seen, disturbances within the respiratory tract occur with very different frequency in different epidemics.