5.3.2. Acid/Base Balance - Buffers - Normal Values/Ranges and Other Buffers

Question 1

What is the normal plasma pH?

Answer 1

7.4

Question 2

What is the normal range of plasma pH?

Answer 2

7. 37 to 7.43

7. 4 +/- 0.3

Question 3

What is the range of pH compatible with life?

Answer 3

7.0-7.6

Question 4

What is the normal value of PCO2?

Answer 4

40mmHg

Question 5

What is the normal range of PCO2?

Answer 5

36.0mmHg to 44.0mmHg

40 +/- 4.0mmHg

Question 6

What is the normal plasma bicarbonate concentration?

Answer 6

24mmol/L

Question 7

What is the normal range for plasma bicarbonate concentration?

Answer 7

22.0mmol/L to 26.0mmol/L

24 +/- 2.0mmol/L

Question 8

What are 3 other extracellular buffer systems?

Answer 8

1. Plasma proteins
2. Dibasic phosphate
3. Bone carbonate

Question 9

What is an example of a plasma protein buffer?

Answer 9

Albumin

Question 10

What is an the equation of the plasma protein buffer?

Answer 10

(Pr-) + (H+) is in equilibrium with (HPr)

Question 11

What is an the equation of the dibasic phosphate buffer?

Answer 11

(HPO4^2-) + (H+) is in equilibrium with H2PO4- (A monobasic phosphate)

Question 12

When is bone carbonate important?

Answer 12

In chronic acid loads (as in chronic renal failure)