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Physiology of Electrolyte Balance Study Guide Test.

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Physiology of Electrolyte Balance Study Guide Test. Which electrolyte is the principal cation in the intracellular fluid (ICF) compartment? Sodium Phosphate Potassium Calcium - CORRECT ANSWER Answer: Potassium Explanation: Sodium Sodium is the major extracellular fluid (ECF) comp...

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  • November 6, 2024
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ROSEGRADES
Physiology of Electrolyte Balance Study
Guide Test.
Which electrolyte is the principal cation in the intracellular fluid (ICF) compartment?

Sodium

Phosphate

Potassium

Calcium - CORRECT ANSWER Answer:



Potassium



Explanation:



Sodium

Sodium is the major extracellular fluid (ECF) compartment cation.



Phosphate

Phosphate, although found in the ICF compartment, is negatively charged; therefore, it is an anion. It is,
however, the most abundant anion in the ICF compartment.



Potassium

Potassium is the most abundant cation found in the ICF compartment.



Calcium

Calcium is a cation; however, it is not the most abundant in the ICF or the ECF compartment.



Which body substance is most commonly used to measure the concentration of electrolytes in
milliequivalents per liter (mEq/L)?

Urine

, Blood plasma

Cerebrospinal fluid

Insulin - CORRECT ANSWER Answer:



Blood plasma



Explanation:



Urine

While electrolytes can be measured in many body substances, including urine, this is not the most
commonly used body substance.



Blood plasma

Electrolytes are most commonly measured in blood plasma or serum.



Cerebrospinal fluid

While electrolytes can be measured in many body substances, including the cerebrospinal fluid, this is
not the most commonly used body substance.



Insulin

Insulin is a hormone secreted by the pancreas. The concentration of electrolytes is not measured in this
body substance.



Which elements should the nurse include when providing patient teaching regarding the primary
functions of electrolytes within the body?

Select all that apply.

Transmitting nerve impulses

Regulating acid-base balance

Altering the action potential of nerve fibers

Maintaining fluid osmolality

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