The main function of the kidney is to ____ the blood. Our blood cycles through our kidneys up to ____ times a day. Special structures in the kidney, called ____ are responsible for removing toxins, drugs and ____ from our ____. Urea is a ____ product formed in the ____ from the break down of excess ____ acids. As well as getting rid of wastes, the nephrons also make sure that our blood retains important molecules such as ____ and water. The kidneys work by using ____ (filtering under high ____) and ____ reabsorption (taking back only what is needed). The kidneys contribute to our health by removing wastes and by maintaining a balance of ____, salts, and minerals in our blood.

Kidney Function

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