This organ is actually composed of two parts and are filtration factories for waste, water, and other materials in the blood and urine. They have these little structural units called nephrons. The nephrons include tiny coiled tubes of capillaries and their associated tubules and there are approximately 1 million of them in each of these organs! Have you guessed what they are yet? I bet you … [Read more...] about Do You Take Care of This Organ?