The volume occupied by formed elements in the blood is

Options

A. 0.3
B. 0.45
C. 0.55
D. 0.75

Answer

To solve the question regarding the volume occupied by formed elements in the blood, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of Blood**:
- Blood is composed of two main components: plasma and formed elements.
- Formed elements include cells and cell fragments suspended in the plasma.

2. **Identify the Types of Formed Elements**:
- The formed elements in the blood consist of:
- **Erythrocytes**: Red blood cells (RBCs) responsible for oxygen transport.
- **Leukocytes**: White blood cells (WBCs) involved in immune response.
- **Thrombocytes**: Platelets that play a crucial role in blood clotting.

3. **Determine the Volume of Formed Elements**:
- The volume occupied by formed elements in the blood is typically expressed as a percentage of the total blood volume.
- It is generally accepted that formed elements constitute about 45% of the total blood volume.

4. **Select the Correct Option**:
- From the options provided:
- A) 0.3
- B) 0
- C) 0.55
- D) 0.75
- The correct answer, based on the standard volume occupied by formed elements, is approximately 0.45 (or 45%).

### Conclusion:
The volume occupied by formed elements in the blood is **0.45** (or 45%).