On an average `"_____"` ml of blood is filtred by the kidneys per minute which consititute roughly `"_________"` of the blood pumped out by each ventricle of the heart in a minute.

Options

A. `500-600. 1//5^(th)`
B. `1100-1200,1//3^(rd)`
C. `500-600,1//3^(rd)`
D. `1100-1200,1//5^(th)`

Answer

To answer the question regarding the amount of blood filtered by the kidneys and its relation to the blood pumped by the heart, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Identify the Average Blood Filtered by the Kidneys**:
- The kidneys filter a specific volume of blood every minute. According to standard biological knowledge, this volume is approximately between 1100 ml to 1200 ml of blood per minute.

2. **Determine the Blood Pumped by Each Ventricle of the Heart**:
- The heart pumps a significant volume of blood each minute. The average amount of blood pumped out by each ventricle of the heart is about 4050 ml per minute.

3. **Calculate the Proportion of Blood Filtered**:
- To find out what fraction of the blood pumped by the heart is filtered by the kidneys, we can take the average amount filtered (let's use 1100 ml for this calculation) and divide it by the total amount pumped (4050 ml).
- Calculation: \( \frac{1100 \text{ ml}}{4050 \text{ ml}} \approx 0.2716 \) or about one-fifth (since one-fifth is approximately 0.2).

4. **Fill in the Blanks**:
- Based on the calculations and standard biological data, we can fill in the blanks in the question:
- On average, **1100 to 1200 ml** of blood is filtered by the kidneys per minute, which constitutes roughly **one-fifth** of the blood pumped out by each ventricle of the heart in a minute.

### Final Answer:
On average, **1100 to 1200 ml** of blood is filtered by the kidneys per minute, which constitutes roughly **one-fifth** of the blood pumped out by each ventricle of the heart in a minute.

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