The Thebesian valve is located at the ostium of which structure?

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Multiple Choice

The Thebesian valve is located at the ostium of which structure?

Explanation:
Thebesian valve is a small semilunar fold located at the opening where the coronary sinus drains into the right atrium. Its role is to help prevent backflow from the right atrium into the coronary sinus as atrial pressures change. The coronary sinus ostium is the specific site, not the inferior vena cava, superior vena cava, or the right atrial appendage. The presence of this valve can vary among individuals, and in some people it may be absent.

Thebesian valve is a small semilunar fold located at the opening where the coronary sinus drains into the right atrium. Its role is to help prevent backflow from the right atrium into the coronary sinus as atrial pressures change. The coronary sinus ostium is the specific site, not the inferior vena cava, superior vena cava, or the right atrial appendage. The presence of this valve can vary among individuals, and in some people it may be absent.

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