Life period of mammalian erythrocytes is :

Options

A. 120 days
B. 180 days
C. 140 days
D. 220 days

Answer

**Step-by-Step Solution:**

1. **Understanding Erythrocytes**: Erythrocytes, commonly known as red blood cells (RBCs), are crucial components of the blood responsible for transporting oxygen and carbon dioxide throughout the body.

2. **Composition of Erythrocytes**: The red color of erythrocytes is due to the presence of hemoglobin, an iron-containing pigment that binds to oxygen and carbon dioxide.

3. **Lifespan of Erythrocytes**: In mammals, erythrocytes have an average lifespan of approximately 120 days. This means that after this period, they are typically removed from circulation.

4. **Destruction of Erythrocytes**: After their lifespan is over, erythrocytes are destroyed in the spleen and liver, often referred to as the "graveyard" of RBCs.

5. **Conclusion**: Therefore, the life period of mammalian erythrocytes is 120 days.

**Final Answer**: The life period of mammalian erythrocytes is 120 days.

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