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

Alveoli Nephrons
Occurs in respirator system Occurs in excretory system
Tiny air sacs which deals with the exchange of gases These are glomerulus and tubules through which glomerular filtrate passes
Blood is supplied to pulmonary veins Blood is supplied to renal veins
It helps in the exchange of gases It helps in blood filtration and production of urine
The structures look similar to air sacs The structures are similar to tubes
Approximately480 million are present in kidneys Approximately 1.5 million are present in kidneys
They appear like a bunch of grapes They appear like a long lengthy tube

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