Q28 of 27 Page 6

Compare alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning. (CBSE 2013, 2011)






S.No. Alveoli Nephron
1 They are tiny balloon-like structures present inside the lungs They are tubular structure present inside the kidney
2 The walls of alveoli are very thin Each nephron has two components-Bowman's capsule and tubules
3 Alveoli are surrounded by the extensive network of blood capillaries Blood capillaries from two patches-glomerulus and peritubular capillaries
4 Alveoli are the sites of gaseous exchange; oxygen and carbon dioxide are exchanged between the blood of capillaries and the gases    Nephrons regulate the concentration of water and salts by filtering the blood, reabsorbing what is needed and excreting the non-required as urine



        

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