If the osmolarity of intracellular fluid (ICF) is higher than that of extracellular fluid (ECF), what is the tonicity of the blood?

Question

Quizplus · Accepted Answer

If the osmolarity of the ICF is higher than that of the ECF, it means there are more solutes inside the cell than outside. This would cause water to move from the ECF into the cell through osmosis, potentially causing the cell to swell and eventually burst. Therefore, the blood must be hypotonic (having a lower concentration of solutes) to the ICF in order to prevent this from happening.

If the Osmolarity of Intracellular Fluid (ICF) Is Higher Than