Chapter 5

NCERT
Class 10
Science
Solutions
13. Compare the structure and mechanism of alveoli in the lung and nephron in the kidney.

Question:

Compare the structure and mechanism of alveoli in the lung and nephron in the kidney.

Answer:

Alveoli Nephron
The alveoli are thin, and fine, with a delicate
surface. It has a similar structure to a
balloon
It is a thin cup-shaped structure.
It increases the surface area of the
exchange of gases in the lungs.
In this, the tubular parts carry urine to
the collecting duct.
There is a long and wide network of
blood cells for the exchange of gases.
Its function is to filter. Due to this,
there is re-absorption of beneficial
substances and water.
In this, there is diffusion of carbon dioxide
from blood to air and oxygen from air to
blood.
Its surface area also increases for filtering
blood and for reabsorption of water. Urine
remains as the end product

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