In terms of quantity , the correct chronological order of blood cells is

Options

A. Erythrocyte `gt` thrombocyte `gt` neutrophil `gt` Iymphocyte `gt` monocyte `gt` eosinophil `gt` basophil
B. Erythrocyte `gt` thrombocyte `gt` monocyte `gt` neutrophil `gt` lymphocyte `gt` eosinophil `gt` basophil
C. Erythrocyte `gt` neutrophil `gt` lymphocyte `gt` monocyte `gt` eosinophil `gt` basophil `gt` thrombocyte
D. Erythrocyte `gt` thrombocyte `gt` neutrophil `gt` lymphocyte `gt` eosinophil `gt` monocyte `gt` basophil

Answer

To determine the correct chronological order of blood cells in terms of quantity, we will analyze the three main types of blood cells: erythrocytes, thrombocytes, and leukocytes.

### Step-by-Step Solution:

1. **Identify the Types of Blood Cells**:
- There are three main types of blood cells:
- Erythrocytes (Red Blood Cells - RBC)
- Thrombocytes (Platelets)
- Leukocytes (White Blood Cells - WBC)

2. **Determine the Quantity of Each Type**:
- Erythrocytes (RBCs) are the most abundant blood cells in the body, with a normal count of about 4.5 to 6 million cells per microliter of blood.
- Thrombocytes (Platelets) are present in lower quantities, typically around 150,000 to 450,000 platelets per microliter of blood.
- Leukocytes (WBCs) are the least abundant, with a normal count of about 4,000 to 11,000 cells per microliter of blood.

3. **Establish the Order Based on Quantity**:
- Based on the quantities identified, the order from most to least abundant is:
1. Erythrocytes (RBCs)
2. Thrombocytes (Platelets)
3. Leukocytes (WBCs)

4. **Further Breakdown of Leukocytes**:
- Within the leukocytes, we can further categorize them by their abundance:
- Neutrophils (most abundant among WBCs)
- Lymphocytes
- Monocytes
- Eosinophils
- Basophils (least abundant among WBCs)

5. **Final Chronological Order**:
- Therefore, the complete chronological order of blood cells in terms of quantity is:
- Erythrocytes (RBCs)
- Thrombocytes (Platelets)
- Neutrophils
- Lymphocytes
- Monocytes
- Eosinophils
- Basophils

### Conclusion:
The correct chronological order of blood cells in terms of quantity is:
**Erythrocytes > Thrombocytes > Neutrophils > Lymphocytes > Monocytes > Eosinophils > Basophils.**