The value that guards the opening between the right atrium (auricle) and the right ventricle is the tricuspid valve. This valve ensures that blood flows in one direction, preventing backflow from the ventricle into the atrium during ventricular contraction. It consists of three flaps (cusps) and plays a crucial role in maintaining proper circulation within the heart.
valves in the heart are at the opening of the right and left auricle,poening of the right and left venticle and the closing of the right and left ventricle
Aortic Semilunar Valve
This is the "right atrioventricular canal" whose opening contains the right AV valve, also known as the tricuspid valve.
Aorta
you mean left atria to left ventricle? the bicusped/mitral valve
The bicuspid valve is the valve between the atrium and ventricle on the left side of the heart. It ensures that blood flows in the correct direction - when the ventricle contracts, it prevents the blood from flowing backwards into the atrium.
Tricuspid vavle
The opening of the coronary sinus is guarded by a flap of tissue called the Thebesian valve. This valve helps prevent backflow of blood from the right atrium into the coronary sinus.
An opening in a wall or floor is a safety hazard and must be either covered or guarded.
typical floor opening
The interatrial septum separates the right and left atria. This wall prevents the mixing of oxygen-rich and oxygen-poor blood.
the biscuspid valve works as a trap door opening when the oxygented blood needs to pass to the left ventricle