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Physiology

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Respiration

Question
33 out of 33
 

maximum increase in minute volume is seen in



A exercise
B hyperthermia

C voluntary Ventilation
D decreased pO2

Ans. A exercise

I. In voluntary Ventilation, there is a increase in minute volume (TV x RR) but it is not much because of CO2 washout depressing the respiratory centres.

II. This is absent in exercise since there is increased CO2 production in body due to exercising muscle’s metabolism.

III. Hypoxia is less effective stimulus than hypercapnia( primary drive for respiration). Hyperthermia is a minor factor affecting respiration.

Respiration Flashcard List

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