Question

What is the correct path through the circulatory system which describes the passage of a blood clot originating in the left leg?

• A. Vena cava → right atrium → right ventricle → lungs → left atrium → left ventricle → aorta
• B. Vena cava → left atrium → right ventricle → lungs →right atrium → left ventricle → aorta
• C. Vena cava → left atrium → left ventricle → lungs →right atrium → right ventricle → aorta
• D. aorta → left atrium → right ventricle → lungs →right atrium → left ventricle → Vena cava

Answer 1

The correct option is A Vena cava → right atrium → right ventricle → lungs → left atrium → left ventricle → aorta

Blood from the vena cava enters the right atrium. Blood from the atria flow into their respective ventricles.A blood clot in the left leg would first enter the venous system to drain back towards the heart, first encountering the vena cava. A clot would flow from the vena cava to the right atrium, to the right ventricle, to the lungs, left atrium, left ventricle and finally the aorta.