Which Is the Most Abundant Cation in the Extracellular Fluid

question 49

Multiple Choice

Which is the most abundant cation in the extracellular fluid?

• A) Ca⁺
• B) Na⁺
• C) Mg²⁺
• D) K⁺
• E) P³⁺

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Definitions:

Hypertonic

A solution with higher osmotic pressure (solute concentration) than another solution, leading cells to lose water.

Isotonic

A solution that has the same salt concentration as cells and blood, preventing net water movement across cell membranes.

NaCl

Sodium chloride, commonly known as table salt, is an ionic compound consisting of sodium and chloride ions.

Solute

Substance that is dissolved in a solvent, forming a solution.