What it means
The upper respiratory tract is the nose, sinuses, throat (pharynx) and voice box (larynx). The lower respiratory tract is the tracheaTRAY-kee-uhThe windpipe: the tube that carries air from the throat to the lungs.Full entry , the bronchi and smaller airways, and the air sacs (alveolusal-VEE-uh-lus (plural alveoli, al-VEE-uh-ly)One of the tiny air sacs at the ends of the smallest airways in the lungs.Full entry ). An upper respiratory infection is a cold or sore throat; lower respiratory infections include bronchitis and pneumonianoo-MOHN-yuhAn infection of one or both lungs in which the air sacs fill with fluid or pus.pneum/o lung, air-ia conditionFull entry .
At a glance
| Spanish | vías respiratorias |
|---|---|
| Also written | respiratory tracts |
Related terms
pneumonia
An infection of one or both lungs in which the air sacs fill with fluid or pus.
alveolus
One of the tiny air sacs at the ends of the smallest airways in the lungs.
trachea
The windpipe: the tube that carries air from the throat to the lungs.
airway
The passages that carry air into and out of the lungs, from the nose and mouth to the smallest air tubes.