(C) In the process of external respiration,the partial pressure of carbon dioxide $(pCO_2)$ in atmospheric (inspired) air is approximately $0.3 \ mm \

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(C) In the process of external respiration,the partial pressure of carbon dioxide $(pCO_2)$ in atmospheric (inspired) air is approximately $0.3 \ mm \ Hg$.This low partial pressure allows for the diffusion of $CO_2$ from the blood (where $pCO_2$ is $45 \ mm \ Hg$) into the alveoli (where $pCO_2$ is $40 \ mm \ Hg$) and subsequently out of the body through expiration.

Class 11 Biology Breathing and Exchange of Gases Exchange of gases

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The $pCO_2$ of inspired air is . . . . . . $mm \ Hg$ during external respiration.

MHT CET 2020 All MHT CET

A
$30$
B
$100$
C
$0.3$
D
$40$

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Breathing and Exchange of Gases

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Exchange of gases

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The exchange of gases in the alveoli of the lungs occurs by .............

AIPMT 1998

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Arrange the appropriate pair.
Column-$I$ Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli $(1)$ $40$
$(b)$ Tissue $(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated) $(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated) $(4)$ $45$

Medium

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Through which process is oxygen transported from the lungs to the tissues?

Easy

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Which surface of a plant leaf is better adapted for gas exchange?

Medium

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What is the partial pressure of Oxygen $(PO_2)$ and Carbon dioxide $(PCO_2)$ in the alveoli?

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Column-$I$	Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli	$(1)$ $40$
$(b)$ Tissue	$(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated)	$(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated)	$(4)$ $45$

The $pCO_2$ of inspired air is . . . . . . $mm \ Hg$ during external respiration.

Similar Questions

The exchange of gases in the alveoli of the lungs occurs by .............

Arrange the appropriate pair.Column-$I$Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)$(a)$ Alveoli$(1)$ $40$$(b)$ Tissue$(2)$ $45$$(c)$ Blood without $O_2$ (Deoxygenated)$(3)$ $40$$(d)$ Blood with $O_2$ (Oxygenated)$(4)$ $45$

Through which process is oxygen transported from the lungs to the tissues?

Which surface of a plant leaf is better adapted for gas exchange?

What is the partial pressure of Oxygen $(PO_2)$ and Carbon dioxide $(PCO_2)$ in the alveoli?

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Arrange the appropriate pair.
Column-$I$ Column-$II$ (Amount of $CO_2$ in $mm \ Hg$)
$(a)$ Alveoli $(1)$ $40$
$(b)$ Tissue $(2)$ $45$
$(c)$ Blood without $O_2$ (Deoxygenated) $(3)$ $40$
$(d)$ Blood with $O_2$ (Oxygenated) $(4)$ $45$