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Ronan Asked :

21-11-2021 Spirometry

Q. What is the pH range of intracellular fluid?

A. 7.0 to 7.2
B. 7.3 to 7.35
C. 7.35 to 7.45
D. 7.50 to 7.60


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Dapzoi Verified
Commented on 2021-11-21 12:20:09 (IST)
Answer: A

Explanation: When CO2 diffuses from the pulmonary capillaries into the alveoli, the blood pH rises 0.04 units to bring the normal arterial value of 7.40. It is quite difficult to measure the pH of fluids inside the tissue cells, but from estimates based on CO2 and (HCO–3) ion concentration, intracellular pH probably ranges from 7.0 to 7.2.