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The Kidneys

OCR A-level BiologyHomeostasisLesson 18 of 33

The kidneys are a pair of red-brown organs attached to the back of the abdominal cavity. They play a role in osmoregulation - regulation of water balance - and the excretion of nitrogenous waste such as urea.

Diagram

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Key terms in this lesson

Excretion
The removal from the body of the waste products of metabolism.

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