The pH A. Of arterial blood normally ranges from 7.2 to 7.6. B. Unit

1.	The pH A. Of arterial blood normally ranges from 7.2 to 7.6. B. Units express [H+] in moles/litre. C. Of blood is directly proportional to the PCO2. D. Of blood is directly proportional to [HCO3- ]. E. Of urine is usually less than 7.
Answer» A. False The range is normally between 7.35 and 7.45. B. False They express it as the negative logarithm of the [H⁺] in moles/litre. C. False PCO₂ raises [H⁺] and hence lowers pH. D. True [HCO₃^- ] lowers [H⁺] by buffering and hence raises pH. E. True The normal diet leaves acidic, rather than alkaline, residues.

The pH A. Of arterial blood normally ranges from 7.2 to 7.6. B. Units express [H+] in moles/litre. C. Of blood is directly proportional to the PCO2. D. Of blood is directly proportional to [HCO3- ]. E. Of urine is usually less than 7.

Answer»

A. False The range is normally between 7.35 and 7.45.

B. False They express it as the negative logarithm of the [H⁺] in moles/litre.

C. False PCO₂ raises [H⁺] and hence lowers pH.

D. True [HCO₃^- ] lowers [H⁺] by buffering and hence raises pH.

E. True The normal diet leaves acidic, rather than alkaline, residues.

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The pH A. Of arterial blood normally ranges from 7.2 to 7.6. B. Units express [H+] in moles/litre. C. Of blood is directly proportional to the PCO2. D. Of blood is directly proportional to [HCO3- ]. E. Of urine is usually less than 7.

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