WebOct 27, 2024 · A system of filtration units within the kidney regulates levels of dilution (water), salts and other small molecules in the filtrate. Any excess or undesired products travel through each ureter and are deposited into … WebMar 1, 2024 · The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart. …
BBC Two - Bitesize: Biology, Kidneys and their function
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Meet the kidneys! (video) Renal system Khan Academy
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