There is a net movement of water into a cell from the surrounding tissue fluid. Is the tissue fluid more or less concentrated than the fluid inside this cell?

In the scenario you described, where there is a net movement of water into a cell from the surrounding tissue fluid, it indicates a difference in concentration between the tissue fluid and the fluid inside the cell.

1. Definition of Concentration: Concentration refers to the amount of solute present in a given volume of solvent. If the concentration of solute is lower in one area compared to another, water will naturally flow towards the area of higher solute concentration in an attempt to equalize the concentrations.

2. Movement of Water: Water moves through osmosis, which is the movement of water across a semipermeable membrane from an area of lower solute concentration (more dilute solution) to an area of higher solute concentration (more concentrated solution).

3. Conclusion: Since water is moving into the cell, this implies that the concentration of solute (such as salts, proteins, or other molecules) in the tissue fluid is less than that inside the cell. Therefore, the fluid inside the cell is more concentrated than the surrounding tissue fluid.

In summary, the tissue fluid is less concentrated than the fluid inside the cell, which is why water is moving into the cell.