Dictionary Home »
Medical Definitions » lung
lung medical definition
noun
Either of the two saclike organs of respiration that occupy the pulmonary cavity of the thorax and in which aeration of the blood takes place. It is common for the right lung, which is divided into three lobes, to be slightly larger than the left, which has two lobes.
(click for a larger image)
lung
Top: right and left lungs
Bottom: detail showing terminal respiratory units of bronchial tree
Learn more about lung
