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
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Nephrons
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Structure
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Structure
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(i)
Alveoli are tiny balloon-like structures present inside the lungs.
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(i)
Nephrons are tubular structures present inside the kidneys.
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(ii)
The walls of the alveoli are one cell thick and it contains an extensive
network of blood capillaries.
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(ii)
Nephrons are made of glomerulus, bowman’s capsule, and a long renal tube.
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Function
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Function
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(i)
The exchange of O2 and CO2 takes place between the
blood of the capillaries that surround the alveoli and the gases present in
the alveoli.
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(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
collecting duct.
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|
(ii)
Alveoli are the site of gaseous exchange.
|
(ii)
Nephrons are the basic filtration unit.
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