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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
the opening of pre caval/superior venacave/ in right auricle is guarded by haversian valve. . .dont get confused by haversian system found in bone
Aortic Semilunar Valve
This is the "right atrioventricular canal" whose opening contains the right AV valve, also known as the tricuspid valve.
Aorta
Thebesian valve
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
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.