Which organ of man receives maximum amount of blood of cardiac output ?

Options

A. Brain
B. Heart
C. Kidney
D. Intestine

Answer

To determine which organ in the human body receives the maximum amount of blood from cardiac output, we can analyze the options provided step by step.

### Step-by-Step Solution:

1. **Understanding Cardiac Output**:
- Cardiac output is defined as the volume of blood pumped by the heart (specifically by the left and right ventricles) per unit of time, typically measured in liters per minute.

2. **Analyzing the Brain**:
- The first option is the brain. The average blood flow to the brain is approximately 60 milliliters per 100 grams of brain tissue per minute. While the brain does receive a significant amount of blood, it is not the organ that receives the most.

3. **Analyzing the Heart**:
- The second option is the heart itself. While the heart is responsible for pumping blood, it does not receive the maximum amount of blood from the cardiac output. The heart receives blood from the systemic circulation, but it is not the organ that receives the most blood.

4. **Analyzing the Kidneys**:
- The third option is the kidneys. The kidneys receive a substantial amount of blood for filtration and excretion of waste products. However, they do not receive the highest volume of blood compared to other organs.

5. **Analyzing the Intestines**:
- The fourth option is the intestines. The intestines receive a significant blood supply for digestion and nutrient absorption, but again, they do not receive the maximum amount of blood compared to other organs.

6. **Identifying the Correct Answer**:
- After analyzing all options, it is established that the organ receiving the maximum amount of blood from cardiac output is the **liver**. The liver receives about 25% of the cardiac output due to its role in processing nutrients and detoxifying substances.

### Conclusion:
The organ that receives the maximum amount of blood from cardiac output in humans is the **liver**.