Osmosis and Dietary Salt Intake

These flashcards cover key concepts related to dietary salt intake, thirst, osmosis, and tonicity of solutions.

What conclusion is best supported by the data regarding salt intake and thirst?

When salt levels in the body are low, people become more thirsty because drinking water can help increase internal salt concentrations.

What is the direction of water movement during osmosis?

Water moves from areas where solutes are less concentrated to areas where they are more concentrated.

What is the concentration of IV saline solution that should be administered if the body's fluids are at 0.9% saline concentration?

0.9% concentration.

What happens to a cell in a hypertonic solution?

Water moves out of the cell.

What characterizes an isotonic solution?

Equal amounts of solute in the cell and solution, resulting in water moving into and out of the cell.

What occurs when a cell is in a hypotonic solution?

Water moves into the cell.

What percentage of participants reported significant episodes of thirst on a high-salt diet?

40%.

What percentage of participants reported significant episodes of thirst on a low-salt diet?

20%.