Here's why:
* Interstitial fluid is the fluid that surrounds cells in tissues. It plays a crucial role in transporting nutrients and removing waste products.
* Sodium is the primary electrolyte in extracellular fluid, which includes interstitial fluid. Its high concentration helps maintain the osmotic balance between cells and their surroundings, contributing to cell volume regulation.
While sodium is the most abundant ion, other important ions in interstitial fluid include:
* Chloride (Cl-)
* Potassium (K+)
* Calcium (Ca2+)
* Bicarbonate (HCO3-)
The specific concentrations of these ions can vary slightly depending on factors like location in the body and overall health.
