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  1. Your Kidneys & How They Work - NIDDK

    Learn how your kidneys filter blood, why kidneys are important, and how kidneys help maintain a healthy balance of water, salts, and minerals in your body.

  2. Kidney - Cleveland Clinic

    May 17, 2022 · Most people have two kidneys, organs that sit in the back of your abdomen. Your kidneys’ primary function is to filter your blood. They also remove waste and balance your …

  3. Kidney - Wikipedia

    Each kidney is attached to a ureter, a tube that carries excreted urine to the bladder. The kidney participates in the control of the volume of various body fluids, fluid osmolality, acid-base …

  4. Kidneys: Location, function, anatomy, pictures, and related ...

    Aug 13, 2024 · The kidneys are essential for balancing the body’s internal environment. If they do not work properly, problems can arise with various bodily functions. Learn more here.

  5. How Your Kidneys Work | National Kidney Foundation

    Oct 15, 2024 · Inside each kidney are up to a million tiny parts called nephrons that help filter (clean) your blood. Once the kidneys filter the blood, the cleaned blood is sent back into the …

  6. Kidney | Function, Structure & Disease | Britannica

    Oct 11, 2025 · kidney, in vertebrates and some invertebrates, organ that maintains water balance and expels metabolic wastes. Primitive and embryonic kidneys consist of two series of …

  7. Introduction to your kidneys - American Kidney Fund

    Where are my kidneys located and what do they look like? Your kidneys are bean-shaped organs located near the middle of your back, one on either side of your spine. Each is about the size …