Question
Biology Question on body fluids and circulation
Which valve is present at the opening of coronary sinus?
A
Mitral valve
B
Eustachian valve
C
Thebesian valve
D
Tricuspid valve
Answer
Thebesian valve
Explanation
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.