What is extracellular fluid?

What is extracellular fluid?

• A. Intracellular fluid
• B. Cytoplasm
• C. Nucleoplasm
• D. Extracellular fluid

Answer: (D)

Understanding body-fluid compartments helps distinguish where different fluids reside. Extracellular fluid is the fluid outside cells, including interstitial fluid that bathes tissues and plasma in the blood. It serves as the environment for nutrient and waste exchange between blood and cells and helps maintain overall homeostasis. In contrast, intracellular fluid is the fluid inside cells, the cytoplasm is the cell’s contents (cytosol plus organelles), and nucleoplasm is the fluid inside the cell nucleus. Therefore, extracellular fluid is the fluid outside cells.

Understanding body-fluid compartments helps distinguish where different fluids reside. Extracellular fluid is the fluid outside cells, including interstitial fluid that bathes tissues and plasma in the blood. It serves as the environment for nutrient and waste exchange between blood and cells and helps maintain overall homeostasis. In contrast, intracellular fluid is the fluid inside cells, the cytoplasm is the cell’s contents (cytosol plus organelles), and nucleoplasm is the fluid inside the cell nucleus. Therefore, extracellular fluid is the fluid outside cells.