National Cancer Institute Thesaurus

Last uploaded: July 2, 2026
Id http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C12468
http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C12468
Preferred Name

Lung

Definitions
One of a pair of viscera occupying the pulmonary cavities of the thorax, the organs of respiration in which aeration of the blood takes place. As a rule, the right lung is slightly larger than the left and is divided into three lobes (an upper, a middle, and a lower or basal), while the left has two lobes (an upper and a lower or basal). Each lung is irregularly conical in shape, presenting a blunt upper extremity (the apex), a concave base following the curve of the diaphragm, an outer convex surface (costal surface), an inner or mediastinal surface (mediastinal surface), a thin and sharp anterior border, and a thick and rounded posterior border.
Synonyms
Lung structure (body structure)
Respiratory System, Lung
LUNG
Lung
Lung, NOS
Lungs
lung
pulmo
Type http://www.w3.org/2002/07/owl#Class
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