Bicuspid valve.. a birth defect of the aortic valve.
The left Mitral atrioventricular valve is bicuspid (two flaps).
tricuspid
The left atrioventricular (AV) valve, known as the mitral valve, has two flaps (cusps), while the right AV valve, called the tricuspid valve, has three flaps. The mitral valve is located between the left atrium and left ventricle, facilitating blood flow into the systemic circulation, whereas the tricuspid valve is positioned between the right atrium and right ventricle, directing blood into the pulmonary circulation. Additionally, the left AV valve withstands higher pressures due to the stronger contractions of the left ventricle compared to the right.
The tricuspid valve has two flaps. It is located between the right atrium and right ventricle in the heart, and it helps prevent blood from flowing back into the right atrium when the right ventricle contracts.
The Right atrioventricular valve (also known as the Tricuspid Valve) has 3 FLAPS
There are two Atrioventricular Valves in the heart. The first one, on the right side of the heart, is called the Tricuspid Valve (it has three 'flaps'). On the left side, the Atrioventricular Valve is called the Bicuspid or Mitral Valve (it has two 'flaps')
The right AV Valve also known as tricuspid valve
The string-like structures that anchor the valve flaps of the AV valve are called the chordae tendinae, which attach to the papillary muscles of the ventricles. Interestingly enough, the bundle branches extend down and into the areas where the papillary muscles are located, and the resulting contraction of the ventricles ensures that the papillary muscles pull the valves tight, ensuring that they are closed thoroughly to prevent backflow in the heart.
Both types of semilunar valve, aortic and pulmonary, have three cusps. These flaps make sure that blood only flows in one direction.
The tricuspid valve. This is the one between the left atrium and the left ventricle.
The antrioventricular valve has two valves. The bicuspid valve has 2 flaps and in located in the right ventricle/right atrium. The tricuspid valve has 3 flaps and is located in the left ventricle/left atrium.
Papillary muscles are connected to the chordae tendonae on the AV valves. During ventricular systole ( contraction of the ventricles) the papillary muscles contract preventing regurgitation of blood back into the atriums.