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People living at sea level have around 5...

People living at sea level have around `5` million RBC per cubic millimetre of their blood whereas those living at an altitude of `5400` metres have around `8` million. This is because at high altitude.

A

People get pollution-free air to breathe and
more oxygen is available

B

Atmospheric `O_(2)` level is less and hence more
RBCs are needed to absorb the required
amount of `O_(2)` to survive

C

There is more UV radiation which enhances
RBC production

D

People eat more nutritive food, therefore more
RBCs are formed

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-BREATHING AND EXCHANGE OF GASES -ASSIGNMENT SECTION - C
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  3. People living at sea level have around 5 million RBC per cubic millime...

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  4. Which one of the following statements is incorrect?

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  6. In man and mammals, air passes from outside into the lungs through

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  7. Lungs are enclosed in

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  8. When a person brathes air through a tube directly into the trachea (...

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  11. The ventilation movements of the lungs in mammals are governed by

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  12. In lungs, the air is separated from the venous blood through

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  13. Which of the following volume of capacity of lungs can't be measured...

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  14. What is the volume of air remaining in the lungs after a normal breath...

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  15. Minute Volume of Respiration (MVR) in a person can be defined as

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  16. When CO(2) concentration in blood increases breathing becomes

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  17. The CO(2) content by volume, in the atmospheric air is about

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  18. Although much CO(2) is carried in blood, yet blood does not become aci...

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  19. The carbon dioxide is transported via blood to lungs mostly

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  20. How the transport of O(2) and CO(2) by blood happens?

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