Glomerular fitration rate is

Options

A. 125ml/min
B. 180 l /day
C. 110 ml/min
D. both and b

Answer

**Step-by-Step Solution:**

1. **Understanding Glomerular Filtration Rate (GFR):**
- GFR is defined as the amount of filtrate formed by the kidneys per minute. It is a crucial indicator of kidney function.

2. **Value of GFR:**
- The standard value for GFR is approximately 125 ml per minute. This means that in one minute, the kidneys filter about 125 ml of blood to produce urine.

3. **Blood Filtration:**
- To achieve this GFR, the kidneys filter around 1100 to 1200 ml of blood every minute. From this volume of blood, about 125 ml is converted into filtrate.

4. **Daily Filtration:**
- If we extend this calculation over a day, the kidneys would filter approximately 180 liters of blood, but it is essential to note that GFR is specifically measured per minute, not per day.

5. **Absorption and Urine Production:**
- Out of the filtrate produced, about 99% is reabsorbed back into the bloodstream, and only about 1 to 1.5 liters of urine is excreted daily.

6. **Conclusion:**
- Therefore, the correct answer to the question regarding the glomerular filtration rate is 125 ml per minute.

**Final Answer:**
- The glomerular filtration rate (GFR) is 125 ml per minute.

---