Sodium accounts for what percentage of extracellular fluid osmolarity?

Name: Sodium accounts for what percentage of extracellular fluid osmolarity?
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Sodium ions are the primary determinant of extracellular fluid osmolarity, accounting for approximately 90 percent of its osmolarity. This is because sodium is the most abundant cation in the extracellular fluid, playing a crucial role in fluid balance and osmotic pressure regulation.

Sodium Accounts for What Percentage of Extracellular Fluid Osmolarity