Cells in need of hydration are likely in a hypertonic solution, where water moves out of the cell. Hypotonic solutions lead to water entering cells, while isotonic solutions have no net water movement.
In a situation where a patient needs hydration, the cells are most likely in a hypertonic solution. In a hypertonic scenario, the extracellular fluid has a higher solute concentration compared to the cell's cytoplasm, causing water to move out of the cell, leading to cell dehydration.
On the other hand, in an hypotonic solution, the extracellular fluid has a lower osmolarity than the cell, resulting in water entering the cell. An isotonic solution occurs when the osmolarity of the extracellular fluid matches that of the cell, leading to no net movement of water into or out of the cell.
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