Largest corpuscles in human blood are

Options

A. Erythrocytes
B. Monocytes
C. Lymphocytes
D. Basophils

Answer

To determine the largest corpuscles in human blood, we will analyze the options provided: erythrocytes, monocytes, lymphocytes, and basophils.

### Step-by-Step Solution:

1. **Identify the Types of Corpuscles**:
- Human blood contains two main types of corpuscles: red blood corpuscles (RBCs) and white blood corpuscles (WBCs).
- RBCs are also known as erythrocytes, while WBCs are referred to as leukocytes.

2. **Understand the Size Comparison**:
- RBCs (erythrocytes) are smaller in size compared to WBCs.
- Under a microscope, it is evident that WBCs are larger than RBCs.

3. **Focus on White Blood Cells**:
- Among the options, we need to focus on the WBCs: monocytes, lymphocytes, and basophils.
- WBCs can be categorized into two types: granulocytes (which contain granules) and agranulocytes (which do not contain granules).

4. **Classify the WBCs**:
- Granulocytes include neutrophils, basophils, and eosinophils.
- Agranulocytes consist of lymphocytes and monocytes.

5. **Identify the Largest WBC**:
- Among the agranulocytes, monocytes are the largest type of WBC.
- Monocytes play a crucial role in the immune system and can differentiate into macrophages and dendritic cells.

6. **Conclusion**:
- Therefore, the largest corpuscles in human blood are monocytes.

### Final Answer:
The largest corpuscles in human blood are **monocytes**.

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