Organ: Kidneys


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Kidneys: Pair of internal organs that produce urine from the blood
Introduction: The kidneys are a pair of bean-shaped organs at the back of the middle abdomen at approximately waist level. They take water from the blood and extract waste products thus producing urine that is stored in the bladder. The tubes between kidneys and the bladder are called ureters.

The kidney is the body's main blood filtration system. It removes waste and dangerous substances from the blood stream and excretes them when you urinate. Damage or failure to the kidney is thus a dangerous situation.


Introduction: Healthy kidneys clean your blood by removing excess fluid, minerals, and wastes. They also make hormones that keep your bones strong and your blood healthy. When your kidneys fail, harmful wastes build up in your body, your blood pressure may rise, and your body may retain excess fluid and not make enough red blood cells. When this happens, you need treatment to replace the work of your failed kidneys. 1

Your kidneys are bean-shaped organs, each about the size of your fist. They are located near the middle of your back, just below the rib cage. The kidneys are sophisticated trash collectors. Every day, your kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water. The waste and extra water become urine, which flows to your bladder through tubes called ureters (YOOR-uh-ters). Your bladder (BLAD-ur) stores urine until you go to the bathroom. 2

One of two bean-shaped organs that filter wastes from the blood. The kidneys are located near the middle of the back. They create urine, which is delivered to the bladder through tubes called ureters. 3

Your kidneys are bean-shaped organs, each about the size of your fist. They are located near the middle of your back, just below the rib cage. The kidneys are sophisticated reprocessing machines. Every day, your kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water. The waste and extra water become urine, which flows to your bladder through tubes called ureters. Your bladder stores urine until you go to the bathroom.4

The kidneys are bean-shaped organs about the size of your fists. They are near the middle of the back, just below the rib cage. The kidneys remove urea from the blood through tiny filtering units called nephrons. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule. Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney. 5

The kidneys are two reddish-brown, bean-shaped organs located just above the waist, one on each side of the spine. They are part of the urinary system. Their main function is to filter blood and produce urine to rid the body of waste. As blood flows through the kidneys, they remove waste products and unneeded water. The resulting liquid, urine, collects in the middle of each kidney in an area called the renal pelvis. Urine drains from each kidney through a long tube, the ureter, into the bladder, where it is stored. Urine leaves the body through another tube, called the urethra.6


Condition count: 53 ; see list below.
Organ subtypes: nephrons (0)
Organ types: Organs (323)
Produces: urine
Number: 2 kidneys (left and right)
Related organs: ureters (4), bladder (24), urethra (4), urinary system (32), urine (2), waist, nephrons (0), renal pelvis, renal medulla
Main condition: Kidney conditions
Organs: all organs

Diseases list: The following list of medical conditions have 'Kidneys' or similar listed as an affected body part in our database:

A

  • Acquired Cystic Kidney Disease ... kidney
  • Acute kidney failure ... kidney
  • Acute urinary conditions ... kidney
  • Alveolar Hydatid Disease ... kidneys
  • Autoimmune Diabetes Insipidus ... kidney
  • Autosomal dominant polycystic kidney disease ... kidney
  • Autosomal Recessive Polycystic Kidney Disease ... kidney

    C

  • Childhood nephrotic syndrome ... kidney
  • Chronic kidney failure ... kidney
  • Classic Distal Renal Tubular Acidosis ... kidneys

    D

  • Diabetes Insipidus ... kidney
  • Diabetic Nephropathy ... kidney
  • Dialysis-related amyloidosis ... kidney

    E

  • End-stage renal disease ... kidney

    G

  • Glomerular Disease ... kidney
  • Glomerulonephritis ... kidney
  • Goodpasture syndrome ... kidney

    H

  • Hematuria ... kidneys
  • Hemolytic uremic syndrome ... kidneys
  • Hyperkalemic Renal Tubular Acidosis ... kidneys

    I

  • IgA nephropathy ... kidney

    K

  • Kidney Cancer ... kidney
  • Kidney conditions ... kidney
  • Kidney Dialysis ... kidney
  • Kidney disease ... kidney
  • Kidney failure ... kidney
  • Kidney stones ... kidney
  • Kidney transplant ... kidney

    L

  • Lupus nephritis ... kidney

    N

  • Nephritis ... kidney
  • Nephrocalcinosis ... kidney
  • Nephropathy ... kidney
  • Nephrotic syndrome ... kidney

    P

  • Polycystic kidney disease ... kidney
  • Post streptococcal glomerulonephritis ... kidney
  • Primary amyloidosis ... kidney
  • Proteinuria ... kidneys
  • Proximal Renal Tubular Acidosis ... kidneys
  • Pyelonephritis ... kidney

    R

  • Renal carbuncle ... kidney
  • Renal osteodystrophy ... kidney
  • Renal tuberculosis ... kidney
  • Renal Tubular Acidosis ... kidney

    S

  • Simple kidney cysts ... kidney

    T

  • Tuberculosis ... kidney
  • Tuberous sclerosis ... kidneys

    U

  • Urinary tract infections ... kidneys
  • Urinary tract infections (child) ... kidneys

    V

  • Vesicoureteral reflux ... kidneys

    W

  • Wegener's granulomatosis ... kidneys
  • Wilms' tumor ... kidney
  • Wilson's Disease ... kidney

    Z

  • Zellweger Syndrome ... kidneys

    Footnotes:
    1. excerpt from Kidney Failure Choosing a Treatment That's Right for You: NIDDK
    2. excerpt from What Are Kidney Stones: NIDDK
    3. excerpt from Kidney Failure Glossary: NIDDK
    4. excerpt from Your Kidneys and How They Work: NIDDK
    5. excerpt from Your Urinary System and How It Works: NIDDK
    6. excerpt from What You Need To Know About Kidney Cancer: NCI

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