Potassium Regulation Practice Questions

Question 1

All of the following are true about potassium, except

Accepted Answer

Leaves the cell in the presence of insulin

Answer

Mostly concentrated inside the cells

Answer

Plasma concentration increases at time of metabolic acidosis

Answer

Ingestion of acetazolamide results in potassium loss

Question 2

Hyperkalemia aciduria is seen in

Accepted Answer

Type IV Renal Tubular Acidosis

Answer

Type I Renal Tubular Acidosis

Answer

Sigmoidocolostomy procedure

Answer

Type II Renal Tubular Acidosis

Question 3

Where does potassium reabsorption primarily occur in the kidney?

Accepted Answer

Primarily in the PCT

Answer

In the glomerulus

Answer

Limited to the descending limb of Henle

Answer

In the collecting duct through secretion

Question 4

A patient has hyperaldosteronism. Which lab finding is expected?

Accepted Answer

Hypokalemia

Answer

Metabolic acidosis

Answer

Hyperkalemia

Answer

Hyponatremia

Question 5

Which of the following is not an effect of efferent arteriole constriction:

Accepted Answer

Decreased GFR

Answer

Increased glomerular hydrostatic pressure

Answer

Decreased blood flow in peritubular vessels

Answer

Increased oncotic pressure in peritubular vessels

Question 6

In Bartter's syndrome there is a defect in

Accepted Answer

Thick ascending limb of LOH

Answer

Descending limb of LOH

Answer

DCT

Answer

PCT

Question 7

Which causes raised angiotensin in blood?

Accepted Answer

Decreased blood pressure

Answer

Raised cardiac output

Answer

Increased sympathetic tone

Answer

Increased blood volume

Question 8

Cerebral blood flow is regulated by all of the following except:

Accepted Answer

Calcium ions

Answer

Blood pressure

Answer

Arterial PCO2

Answer

Potassium ions

Question 9

Which of the following is not an absolute indication for hemodialysis?

Accepted Answer

GI bleeding

Answer

Convulsions

Answer

Pericarditis

Answer

Hyperkalemia of 6.5 mEq/L

Question 10

Assertion: RMP depends on proteins and phosphate ions.
Reason: Diffusion potential can be calculated using nernst equation.
Choose the best statement regarding the assertion and reason.

Accepted Answer

Both true, Reason is not the explanation of assertion

Answer

Assertion false, Reason true

Answer

Both true, Reason is the explanation of assertion

Answer

Assertion true, Reason false

Potassium Regulation — MCQs

Potassium Regulation — MCQs

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