On high mountain difficulty in breathing is due
to
(a) decrease in partial pressure of O₂
(b) decrease in amount of O₂
(c) increase in CO₂concentration
(d) all of the above
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Answer:
decrease in amount of 02 is the answer for this question
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On high mountain difficulty in breathing is due to decrease in partial pressure of O₂.
* At higher altitudes, the external partial pressure of oxygen decreases so the amount of oxygen present in the alveoli is less.
* This oxygen is then transferred from the alveoli to the haemoglobin of the red blood cells for circulation in the body.
* In such a condition, the amount of oxygen carried by the haemoglobin in the blood also decreases.
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