Body Fluids and CirculationMedium
Question
The opening between the right atrium and the right ventricle is guarded by $\_\_\_\_$.
Options
A.semilunar valve
B.sino-atrial node
C.bicuspid valve
D.tricuspid valve
Solution
Sol. [Key Concept: Right atrioventricular (tricuspid) valve]
The opening between the right atrium and the right ventricle is guarded by a valve formed of three muscular flaps or cusps, called the tricuspid valve.
A bicuspid/mitral valve guards the opening between the left atrium and the left ventricle.
The openings of the right and the left ventricles into the pulmonary artery and the aorta, respectively, are provided with the semilunar valves.
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