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Physiology

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Respiration

Question
6 out of 16
 

An increase in which of the following parameters will shift the O2 dissociation curve to the left: (LQ)



A Temperature

B Partial pressure of CO2

C 2, 3 DPG concentration

D Oxygen affinity of hemoglobin

Ans. D Oxygen affinity of hemoglobin

I. The decrease in oxygen affinity of hemoglobin when the pH of blood falls is known as Bohr effect.

II. Hydrogen ions alter the structure of hemoglobin and increase the release of oxygen.

III. A rise in temperature, CO2 concentration and 2,3 DPG concentration shifts the curve to the right.

IV. When curve is shifted to right a higher PO2 is required to bind a given amount of oxygen to hemoglobin.

Respiration Flashcard List

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