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  • Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Q. 13     Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and               functioning.

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Alveoli Nephron
(i) Alveoli is the functional unit of the lungs.

(ii) Nephron is the functional unit of the Kidneys.
(ii) A lung has about 300 million alveoli. (ii) A kidney has about a million nephrons.
(iii) Alveoli provides a very large surface for the exchange of gaseous materials to take place. (iii) The Surface are of Nephrons is not very large.                                    
(iv) The exchange of carbon dioxide and oxygen takes place through alveoli.                               (iv) The absorption of water, amino acids, sugar molecules etc. take place in the Nephron.

 

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