What is the largest fluid compartment in the body?

• A. Extracellular fluid
• B. Intracellular fluid
• C. Interstitial fluid
• D. Plasma

Answer: (B)

Verified step by step guidance

1. Understand the different fluid compartments in the body: Intracellular fluid (ICF), Extracellular fluid (ECF), which includes interstitial fluid and plasma.
2. Recognize that the Intracellular fluid (ICF) is the fluid contained within the cells, making up a significant portion of the body's total water content.
3. Identify that the Extracellular fluid (ECF) is the fluid outside the cells, which is further divided into interstitial fluid (fluid between cells) and plasma (fluid component of blood).
4. Compare the volumes of these compartments: The Intracellular fluid (ICF) generally accounts for about two-thirds of the total body water, making it the largest compartment.
5. Conclude that the Intracellular fluid is the largest fluid compartment in the body, as it contains the majority of the body's water content.