Why do human beings face difficulty breathing | vedclass

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Question

(D) At high altitudes,the total atmospheric pressure is lower than at sea level. Because the total atmospheric pressure is lower,the partial pressure

Vedclass · Accepted Answer

Low partial pressure of $O_{2}$

Vedclass · Answer

(D) At high altitudes,the total atmospheric pressure is lower than at sea level. Because the total atmospheric pressure is lower,the partial pressure of oxygen $(pO_{2})$ is also significantly lower. Breathing involves the diffusion of oxygen from the atmosphere into the blood,which depends on the pressure gradient. Since the partial pressure of oxygen in the atmosphere is low at high elevations,the diffusion of oxygen into the blood becomes difficult,leading to breathing difficulties.

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)	$(4)$ $45$

Why do human beings face difficulty breathing at high elevations?

Similar Questions

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) $(4)$ $45$

The number of $RBC$ in a man increases if he lives at a higher altitude because:

Maximum amount of oxygen is lost from the blood in the

In humans,exchange of gases occurs

Which are the three main layers that form the diffusion membrane?

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