mention the respiratory unit of lungs and excretory unit of kidnys
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Alveoli and Nephrons" are the respiratory unit of lungs and excretory unit of the kidney, respectively.
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Alveoli are the respiratory unit of lungs. The exchange of gases in the human body takes place in alveoli. They are tiny air sacs ranging up to 350 million in number in each human lung.
The nephron is the functional unit of the kidney.
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