52.4 MB (4.3 MB compressed)
3690 x 4965 pixels
31.2 x 42.2 cm ⏐ 12.3 x 16.6 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Kidneys. Computer graphic illustration of two human kidneys, seen on a waterdrop background to depict the role of kidneys as fluid filtration units. The kidneys (brown, at centre) are located between the two main blood vessels of the body: the aorta artery (brown) and posterior vena cava vein (blue). Renal arteries and veins branch off these blood vessels to supply blood to, and drain blood away from the kidneys. The kidneys filter the blood of impurities and excrete waste products and excess water as urine. About 140 litres of fluid pass into the kidneys of an adult each day. Excreted fluid passes down the ureters (yellow) into the bladder.
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