Identify the correct statement from the following

Options

A. 70-80% of electrolytes and water are reabsorbed in PCT
B. Volume of the glomerular filtrate is 180 liters
C. Volume of urine per day is 1.5 liters
D. All the above

Answer

To identify the correct statement from the provided options, we will analyze each option step by step.

### Step 1: Evaluate Option 1
- **Statement**: 70 to 80 percent of electrolytes and water are absorbed in the Proximal Convoluted Tubule (PCT).
- **Analysis**: The PCT is known for reabsorbing a significant portion of the filtrate. It is widely accepted that approximately 70 to 80 percent of water and electrolytes are indeed reabsorbed here.
- **Conclusion**: This statement is **correct**.

### Step 2: Evaluate Option 2
- **Statement**: The volume of the glomerular filtrate is 180 liters.
- **Analysis**: The kidneys produce about 125 ml of filtrate per minute in men, which totals approximately 180 liters per day (125 ml/min × 60 min × 24 hours = 180 liters). For females, it is about 105 ml per minute, totaling around 150 liters per day. Thus, this statement is also **correct** for men.
- **Conclusion**: This statement is **correct**.

### Step 3: Evaluate Option 3
- **Statement**: The volume of urine per day is 1.5 liters.
- **Analysis**: The normal range for daily urine output is between 800 ml to 2000 ml (or 0.8 to 2.0 liters). Since 1.5 liters falls within this range, this statement is also **correct**.
- **Conclusion**: This statement is **correct**.

### Step 4: Evaluate Option 4
- **Statement**: All of the above.
- **Analysis**: Since all previous options (1, 2, and 3) have been determined to be correct, this statement must also be correct.
- **Conclusion**: This statement is **correct**.

### Final Conclusion
- The correct answer is **Option 4: All of the above**.

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