In the human body , ………..of water occurs inside the cells as intracellular water , while ……….of water is present in all extracellular fluids.

Options

A. `55% and 45%`
B. `60% and 40%`
C. `45% and 55%`
D. `40% and 60%`

Answer

To solve the question regarding the distribution of water in the human body, we need to determine the percentage of water that is intracellular (inside the cells) and the percentage that is extracellular (outside the cells).

### Step-by-Step Solution:

1. **Understanding Intracellular and Extracellular Water**:
- Intracellular water refers to the water found inside the cells.
- Extracellular water refers to the water found outside the cells, which includes interstitial fluid, plasma, and other bodily fluids.

2. **Referencing the Data**:
- According to biological studies, approximately 55% of the total body water is found within the cells (intracellular).
- The remaining 45% of the total body water is found in extracellular fluids.

3. **Formulating the Answer**:
- Therefore, we can conclude that:
- **55% of water occurs inside the cells as intracellular water.**
- **45% of water is present in all extracellular fluids.**

4. **Final Answer**:
- The correct completion of the statement is: "In the human body, 55% of water occurs inside the cells as intracellular water, while 45% of water is present in all extracellular fluids."