Bicuspid or tricuspid valves, depending on which side of the heart you are talking about
S1 which is the closing of the atrioventricular valves.
The atrioventricular valves.
The bicuspid valve.
Cuspid valves are right and left atrioventricular (AV) valves.
Coronary sulcus
During heart contraction
It means "atrioventricular". It refers to the valves between the atria and the ventricles.
The atrioventricular valves are held in place by the chordea tendeae. These tendons are chord like structures that stiffen to close the valve.
The right atrioventricular valve.
The valves separating the atria and ventricles are collectively referred to as atrioventricular valves. These include the tricuspid valve on the right side of the heart and the mitral valve on the left side.
atrioventricular
.. atria during systole.