JEANETTE ENGQVIST / SCIENCE PHOTO LIBRARY JEANETTE ENGQVIST / SCIENCE PHOTO LIBRARY
Lung anatomy. Computer illustration showing the normal anatomy of a woman's lungs (blue) and airways (grey). Air is inhaled through the trachea (windpipe, vertical, centre), which then splits into the two bronchi (centre left and right. This carries the air to the bronchioles (branched) in the lungs, which terminate in the alveoli (not shown).
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