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Mineral functions and sources. Calcium:  needed for healthy bones and teeth, normal blood clotting, and nervous system functioning.  sources: dairy products, broccoli, cabbage, kale, tofu, sardines and salmon.
Function of Nephron. The nephron is the basic functional and structural unit found in the kidneys. Its main functions include regulating the concentration of sodium salts and water by filtering the kidneyâs blood, excreting any excess in the urine and reabsorbing the necessary amounts.unction of Nephron. The main functions of the nephron are related to filtering, reabsorbing and secreting glutamate, carbohydrates and solutes. The glomerulus has two cell layers as well as a basement membrane that separate it from the Bowmanâs capsule.