تعريف respiratory tract في الإنجليزية الإنجليزية القاموس.
The passages through which air enters and leaves the body, including the nose and nasal passages, the pharynx, larynx, trachea, lungs, bronchi and alveoli
any of several cytologic smears obtained from different parts of the lower respiratory tract; used for cytologic study of cancer and other diseases of the lungs