Which blood cells fight against the germs that may enter our body?

Options

A. White blood cells
B. Red blood cells
C. Platelets
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Composition**: Blood is a special type of connective tissue that consists of two main components: plasma and formed elements. Plasma makes up about 55% of blood, while formed elements account for approximately 45%.

2. **Identifying Formed Elements**: The formed elements of blood include three main types of cells: erythrocytes (red blood cells), leukocytes (white blood cells), and platelets.

3. **Function of Erythrocytes**: Erythrocytes, or red blood cells (RBCs), are the most abundant cells in the blood. Their primary function is to transport oxygen throughout the body, aided by a red pigment called hemoglobin.

4. **Identifying the Cells that Fight Germs**: The leukocytes, or white blood cells (WBCs), are the cells responsible for fighting against germs and pathogens that enter the body. Unlike red blood cells, white blood cells are colorless and do not contain hemoglobin.

5. **Function of White Blood Cells**: White blood cells play a crucial role in the immune system. They identify and destroy foreign organisms, such as bacteria and viruses, which are known as pathogens. This makes them essential for protecting the body against infections.

6. **Conclusion**: Therefore, the blood cells that fight against germs that may enter our body are the white blood cells (WBCs), also known as leukocytes.

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