Which blood cells carry oxygen in the body?

Options

A. Platlets
B. White blood cells
C. Plasma
D. Red blood cells

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Composition**: Blood is a special type of connective tissue that consists of a liquid component called plasma and formed elements.

2. **Identifying Blood Components**: The formed elements in blood include:
- Red blood cells (RBCs) or erythrocytes
- White blood cells (WBCs) or leukocytes
- Platelets

3. **Function of Blood Components**:
- White blood cells (WBCs) are responsible for fighting infections.
- Platelets play a crucial role in blood clotting.
- Red blood cells (RBCs) are primarily responsible for transporting oxygen throughout the body.

4. **Role of Hemoglobin**: Red blood cells contain a pigment called hemoglobin, which binds with oxygen. This binding is essential for the transport of oxygen from the lungs to the rest of the body.

5. **Conclusion**: The blood cells that carry oxygen in the body are the red blood cells (RBCs), also known as erythrocytes.

**Final Answer**: The blood cells that carry oxygen in the body are red blood cells (RBCs) or erythrocytes.

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