human lungs zoom with organs posterior view |
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navigate by keyword : alveoli anatomy arteries artery body breathing bronchi bronchioles chest circulatory emphysema human larynx lungs medical nerve nerves organ organs pleura pleural pneumonia pulmo respiratory ribcage skeleton thoracic trachea veins vertebrates windpipe |
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Each of the pair of organs situated within the ribcage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed. Lungs are characteristic of vertebrates other than fish, though similar structures are present in some other animal groups. |
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