What will happen if the ECF's osmolarity increases?
A) Water will shift from the ICF into the ECF.
B) Water will not shift between the ECF and the ICF.
C) Water will move from the ECF into the ICF.
D) Vasopressin secretion will decrease.

Question

Quizplus · Accepted Answer

When the extracellular fluid (ECF) osmolarity increases, it becomes hypertonic compared to the intracellular fluid (ICF), causing water to move out of the cells (ICF) into the ECF to balance the osmolarity.

What Will Happen If the ECF's Osmolarity Increases