What is the final destination of the fluid after moving from plasma to interstitial space due to dilution?

What is the final destination of the fluid after moving from plasma to interstitial space due to dilution?

• A. Into the cells.
• B. Returns to plasma.
• C. Remains in interstitial space indefinitely.
• D. Exits via lymphatics.

Answer: (A)

Fluid movement between compartments is governed by osmotic gradients. When plasma becomes diluted, its solute concentration drops, lowering the osmolarity of the extracellular space. Intracellular fluid has a relatively higher osmolarity, so water is drawn into cells to balance the concentrations. Therefore, the fluid that moved from plasma into the interstitial space due to dilution is ultimately pulled into the cells, making the intracellular space the final destination. (Note: some interstitial fluid can be drained by lymphatics or reabsorbed into plasma over time, but the immediate fate driven by the dilution gradient is entry into cells.)

Fluid movement between compartments is governed by osmotic gradients. When plasma becomes diluted, its solute concentration drops, lowering the osmolarity of the extracellular space. Intracellular fluid has a relatively higher osmolarity, so water is drawn into cells to balance the concentrations. Therefore, the fluid that moved from plasma into the interstitial space due to dilution is ultimately pulled into the cells, making the intracellular space the final destination. (Note: some interstitial fluid can be drained by lymphatics or reabsorbed into plasma over time, but the immediate fate driven by the dilution gradient is entry into cells.)