All of the following protect the body against entrance of germs except:
Correct answer: E. RBCs
- A. Tears
- B. Mucus membrane
- C. WBCs
- D. Ciliated cells
- E. RBCs
Explanation
Option E is correct.RBCs have no role in immunity. RBCs (red blood cells) do not protect the body against the entrance of germs. RBCs are responsible for carrying oxygen to the tissues and carbon dioxide away from the tissues. They do not have the ability to engulf or kill germs.
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About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
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