Correct Option
The correct option is Tricuspid for the right side and bicuspid for the left side.
Explanation
The human heart is a muscular organ divided into four chambers: two upper atria and two lower ventricles. To ensure the unidirectional flow of blood and prevent backflow during contraction, specific valves are positioned at the junctions between these chambers and the major vessels leaving the heart.
Detailed Analysis
- Right Atrioventricular Junction: The opening between the right atrium and the right ventricle is guarded by a valve consisting of three muscular flaps or cusps. Consequently, this is named the tricuspid valve.
- Left Atrioventricular Junction: The opening between the left atrium and the left ventricle is guarded by a valve consisting of two muscular flaps or cusps. This is named the bicuspid valve, also commonly referred to as the mitral valve.
- Semilunar Valves: These valves are located at the openings of the right and left ventricles into the pulmonary artery and the aorta, respectively. They are distinct from the atrioventricular valves mentioned above.
Therefore, the tricuspid valve guards the right side, and the bicuspid valve guards the left side.
Key Takeaway: The Tricuspid valve is located between the Right atrium and ventricle, while the Bicuspid (Mitral) valve is located between the Left atrium and ventricle.