Identification

1. The major extracellular cation.

2. The primary osmotic particle outside the cell.

4. The hormone that opposes aldosterone and renin, acting as an antihypertensive agent.

5. A false decrease in sodium concentration due to measurement error, often caused by hemolysis.

3. The hormone that promotes sodium retention and potassium excretion.

6. The most abundant cation in the intracellular fluid.

7. The major anion of the extracellular fluid.

8. The most common electrolyte disorder in hospitalized patients.

9. The hormone that helps regulate calcium levels by increasing bone resorption, renal Ca reabsorption, and vitamin D production.

10. The active form of vitamin D, which increases intestinal calcium absorption and enhances the effects of PTH.