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WorksheetsRenal Acid-base Regulation
Total questions: 10
Worksheet time: 7mins
What is the most important buffer system in the blood ?
HCO3- buffer
Phosphate buffer
Plasma protein buffer
Hemoglobin buffer
Which changes reflects metabolic acid-base disorders?
HCO3- level
PO2 level
PCO2 level
pH level only
Which Urine pH level can the kidneys excrete?
4.0
9.0
3.5
3.0
Where is most of the reabsorption of HCO3- in the urine occur?
Proximal tubule
Distal tubule of the nephron
Loop of Henle
Collecting duct
Acidosis of the body leads to increased ___ excretion by the kidney.
H+
HCO3-
Sodium
Water
What reflects respiratory acid-base disorders?
PCO2 level
PO2 level
HCO3- level
pH level only
Which is NOT a step of renal compensation in acidosis?
Decreased production and excretion of NH4+
Increased H+ secretion by nephron
Filtered HCO3- is reabsorbed
Excretion of titratable acids
What is the movement of H+ when there is alkalosis in the ECF?
moves out of the cell
moves into the cell
unable to pass through the plasma membrane
moves with water
Which will result to increased ventilatory rate?
decrease in PCO2
decrease in pH
increase in PCO2
same pH
Which of the following is TRUE of renal compensation for pH changes?
It is accomplished by modifying HCO3- excretion
It is the fastest among the defense mechanisms against pH changes
There is modification of respiratory rate
PCO2 is regulated
