Final answer:
The right atrioventricular valve is called the tricuspid valve and it has three flexible cusps, ensuring one-way blood flow from the right atrium to the right ventricle.
Step-by-step explanation:
The right atrioventricular valve, the tricuspid valve, has three flexible cusps. This valve is located between the right atrium and the right ventricle of the heart. The tricuspid valve functions as a one-way valve, allowing blood to flow from the right atrium to the right ventricle while preventing it from flowing backward.
It comprises three flaps or leaflets made of endocardium reinforced with additional connective tissue which are connected by chordae tendineae to papillary muscles that control the opening and closing of the valve.