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

Alveoli Nephrons
Structure
(i) Alveoli are tiny sac-like structures present inside the lungs.(i) Nephrons are tubular structures present inside the kidneys.
(ii) The walls of the alveoli are one cell thick, and it contains a network of blood capillaries.(ii) Nephrons are made of glomerulus, Bowman’s capsule, and a long tubules.
Function
(i) The exchange of Oand CO2 takes place between the blood of the capillaries all around the alveoli.(i) The blood enters the kidneys through the renal artery. The blood is entered here, and the nitrogenous waste in the form of urine is collected by the collecting duct.
(ii) Alveoli are the site of gaseous exchange.(ii) Nephrons are the basic filtration unit.

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