KERMOAL / BSIP / SCIENCE PHOTO LIBRARY KERMOAL / BSIP / SCIENCE PHOTO LIBRARY
Lung anatomy. Artwork showing the lungs and their pleura (membranes). The lungs (purple) are shown within the rib cage, with the diaphragm (red) and collar bones also shown. At top centre is the trachea, with two arteries (red). The organ (purple) between the lungs is the thymus, part of the immune system. The circular inset (upper right) shows the microscopic structure of the pleura (black and white layers), plus a section through the adjacent rib and the veins (blue), arteries (red) and nerves (yellow) running alongside the rib.
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