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  4. Which valve is present at the opening of coronary sinus?

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Q. Which valve is present at the opening of coronary sinus?

WBJEEWBJEE 2014Body Fluids and Circulation

Solution:

The right atrium receives the openings of superior vena cava, inferior vena cava and coronary sinus. The opening of the coronary sinus has coronary or Thebesian valve. Thebesian valve is a semicircular fold of the inner membrane lining of the right atrium, at the orifice of the coronary sinus.