Question

3. What are major factors that determine blood osmolality? The osmolality of 0.9% NaCl is ___________. How is the osmolality different from the molarity?

Answer 1

1)The osmolality of blood increases with dehydration and decreases with overhydration. In normal people, increased osmolality in the blood will stimulate secretion of antidiuretic hormone (ADH). This will result in increased water reabsorption, more concentrated urine, and less concentrated blood plasma.

2) 0.9%NACL IS

How is the osmolality different from the molarity?

Molarity (M) is the number of moles of solute per liter of solution. The unit of molarity is the mole (mol).

Osmolarity (Osm/L) is the total concentration of all solutes in the solution. The unit of osmolarity is the osmol (osm). Osmolarity can be used to predict whether water will move from one side of a semipermeable membrane to the other.