Bicuspid valve Mitral valve (bicuspid valve) and Tricuspid valve
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or checks the flow in one direction. Valves whose disc is between the seat and the stem and where the stem moves in a direction into the valve to shut it are normally-seated or front seated. Valves whose seat is between the disc and the stem and where the stem moves in a direction out of the valve to shut it are reverse-seated or back seated. 1 The two atrioventricular (AV) valves, the mitral valve (bicuspid valve), and the tricuspid valve, which are between the upper atria and the lower ventricles. 2  The two semilunar (SL) valves, the aortic valve and the pulmonary valve, which are in the arteries leaving the heart. A heart valve normally allows blood to flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart. A heart valve opens or closes incumbent on differential blood pressure on each side. The mitral valve is also called the bicuspid valve because it contains two leaflets or cusps. The mitral valve gets its name from the resemblance to a bishop 's mitre (a type of hat). It is on the left side of the heart and allows the blood to flow from the left atrium into the left ventricle. A heart valve normally allows blood to flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart. A heart valve opens or closes incumbent on differential blood pressure on each side. The semilunar valves (SV) are two valve structures that sit between the right ventricle and the pulmonary artery and between the left ventricle and the aorta. The flaps of the valves open and close to allow the unidirectional flow of blood out of the heart, while preventing backflow of blood. The valve between the left ventricle and aorta is called the aortic valve and the valve between the pulmonary artery and right ventricle is called the pulmonary valve. The heart has two types of valves: the atrioventricular (AV) and semilunar. The semilunar valves open to let blood pass out of the ventricles. The right ventricle pumps into the pulmonary artery, which leads to the lungs, and the left ventricle empties into the aorta, a main artery that distributes oxygen rich blood to the rest of the body. The mitral valve and the aortic valve are in the left heart; the tricuspid valve and the pulmonary valve are in the right heart. A heart valve normally allows blood to flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart. A heart valve opens or closes incumbent on differential blood pressure on each side. The four main valves in the heart are: 1  The two atrioventricular (AV) valves, the mitral valve (bicuspid valve), and the tricuspid valve, which are between the upper atria and the lower ventricles. A heart valve normally allows blood to flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart. A heart valve opens or closes incumbent on differential blood pressure on each side. The heart is divided into four main areas, or chambers – two upper chambers (called the left and right atrium) and two lower chambers (called the left and right ventricle). There are four valves that control the flow of blood through your heart. There are two common problems that can develop in heart valves: When your valve is narrowed and does not completely open because of things like a build-up of calcium (mineral deposits), high cholesterol (a waxy fat), age, or genetics (such as a birth defect), this is called stenosis. *sometimes called the Pulmonic Valve. This does not include the other two valves: the Thebesian valve, which can be sometimes absent in healthy individuals; and the eustachian valve, which is important during the fetal stages of life but is not necessary in adults. 1 Tricuspid Valve (between the right atrium and the right ventricle). 2  Pulmonary Valve* (semilunar valve between the right ventricle and the pulmonary artery). 3  Mitral Valve (between the left atrium and the lef There are two valves in the heart. They are tricuspid valve and bicuspid valve.There is a possibility of the blood going back into the atria. This is prevented by these two … valves, the tricuspid valve on the right side and the bicuspid valve on the left side. 1 Tricuspid Valve (between the right atrium and the right ventricle). 2  Pulmonary Valve* (semilunar valve between the right ventricle and the pulmonary artery). 3  Mitral Valve (between the left atrium and the lef
https://en.wikipedia.org/wiki/Valve https://en.wikipedia.org/wiki/Heart_valve https://en.wikipedia.org/wiki/Heart_valve http://www.wisegeek.org/what-are-semilunar-valves.htm https://en.wikipedia.org/wiki/Heart_valve https://en.wikipedia.org/wiki/Heart_valve http://www.heartcaremw.com/services/heart-valve-clinics/diseases-treatments.html http://www.answers.com/Q/What_are_the_valves_in_the_heart_called http://www.answers.com/Q/What_are_the_valves_in_the_heart_called
what are the valves called