If extracellular water has an excess of sodium ions,

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Quizplus · Accepted Answer

When there is an excess of sodium ions in extracellular fluid, the osmotic pressure gradient causes water to move out of the cells, leading to intracellular dehydration and shrinkage. This is also known as hypertonicity. There is no significant movement of sodium ions into cells, as this would require energy and specific transport mechanisms. Zinc and fluoride ions are not related to sodium ion imbalance in extracellular fluid. Sodium ions cannot be used for energy directly; rather, they play a crucial role in maintaining osmotic balance and cell signaling.

If Extracellular Water Has an Excess of Sodium Ions