The causes of Cyanosis include:
Correct answer: D. Ventricular septum defect
- A. Deficiency of vitamin C
- B. Varicella-zoster virus
- C. Degeneration of the cartilage of joints
- D. Ventricular septum defect
- E. None of these options
Explanation
Cyanosis occurs when oxygen-depleted (deoxygenated) blood, which is bluish rather than red, circulates through the skin. This occurs when there is the mixing of blood which takes place when there is a septal defect in the heart, e.g Ventricular Septal Defect (VSD).
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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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