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Get Answers to all your Questions
Q. 13 Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Answers (1)
| Alveoli | Nephron |
| (i) The alveoli are the functional unit of the lungs. |
(ii) Nephron is the functional unit of the Kidneys. |
| (ii) A lung has about 480 million alveoli. | (ii) A kidney has about a million nephrons. |
| (iii) Alveoli provide a very large surface for the exchange of gaseous materials to take place. | (iii) The Surface area 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. takes place in the Nephron. |
| (v) Made up of simple squamous epithelium | (v) Composed of simple cuboidal epithelial cells with microvilli. |
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