Which of the following statements is wrong about the closed circulatory system?

Options

A. Blood remains within blood vessels and never comes in direct connect with the body cells.
B. In it flow of fluid can be more precisely regulated.
C. There is no blood capillary.
D. Blood flow is more rapid due to higher pressure.

Answer

To determine which statement is wrong about the closed circulatory system, let's analyze each option provided:

1. **Blood remains within blood vessels and never comes in direct contact with the body cells.**
- In a closed circulatory system, blood is indeed contained within blood vessels and does not directly contact body cells. Instead, nutrients and gases are exchanged through the walls of the capillaries. This statement is **true**.

2. **Fluid can be more precisely regulated.**
- The closed circulatory system allows for precise regulation of blood flow and pressure, which is essential for maintaining homeostasis. This statement is **true**.

3. **There is no blood capillary.**
- This statement is incorrect. Closed circulatory systems have capillaries, which are small blood vessels where the exchange of materials (like oxygen and nutrients) occurs between blood and tissues. Therefore, this statement is **false**.

4. **Blood flow is more rapid due to higher pressure.**
- In a closed circulatory system, blood is pumped by the heart under higher pressure, which indeed allows for faster blood flow throughout the body. This statement is **true**.

Based on the analysis, the wrong statement about the closed circulatory system is **"There is no blood capillary."**

### Summary of Steps:
1. Review the definition of a closed circulatory system.
2. Analyze each statement regarding its truthfulness.
3. Identify the statement that contradicts the characteristics of a closed circulatory system.