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Review of the Urinary System with Common Disorders.

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A kidney has many thousand nephrons. Waste materials and essential substances enter a nephron from the blood stream, and embark on an interesting journey.

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Body wastes are toxic or poisonous so they have to be removed from the body. The removal of waste from the body is called excretion. The body’s main organs of excretion are the kidneys. What if the kidneys fail to function?

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Characteristics: Each kidney consists of millions of nephrons. Nephrons are the basic units of kidney. This nephrons helps in the filtration of blood.

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Description of urine formation with the help of a diagram.