The best indicator of the blood's osmolality is the concentration of
A)calcium ion.
B)bicarbonate ion.
C)sodium ion.
D)potassium ion.

Question

Quizplus · Accepted Answer

The best indicator of blood's osmolality is the concentration of sodium ion. Osmolality is a measure of the concentration of solutes in a solution, where a higher concentration of solutes leads to a higher osmolality. Sodium is the primary extracellular cation and plays a major role in maintaining the osmotic balance of the body. Therefore, the concentration of sodium in the blood is the best indicator of its osmolality.

The Best Indicator of the Blood's Osmolality Is the Concentration