Q. The opening between the right atrium and the right ventricle is guarded by ____.
A) sino-atrial node
B) bicuspid valve
C) tricuspid valve
D) semilunar valve
Explanation
[Solution from source] The right atrioventricular opening is guarded by the tricuspid valve; the bicuspid (mitral) valve guards the left. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.