What is the average amount of interstitial fluid compared to plasma that makes up the extracellular component of bodily fluids? (Choose 2)

The correct choice highlights the typical distribution of extracellular fluids in the human body. Interstitial fluid and plasma are both components of the extracellular fluid; however, interstitial fluid typically comprises a larger volume compared to plasma.

In a healthy adult, the total extracellular fluid is approximately 15 liters, with interstitial fluid accounting for about 12 liters and plasma encompassing about 3 liters. This distribution illustrates that interstitial fluid constitutes the bulk of the extracellular compartment, providing a medium for nutrient and waste exchange between blood and cells while plasma primarily functions as the transport medium for red blood cells, nutrients, and hormones.

The other options do not accurately reflect this physiological distribution. They either misrepresent the relationship between interstitial fluid and plasma, or in certain cases, may even repeat interstitial fluid or plasma values incorrectly. The understanding of these volumes is crucial in physiology to appreciate fluid balance, osmotic forces, and their roles in homeostasis.