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heart valves




valves of the heart
The heart has four valves which, by opening and closing in a rhythmic way, serve to keep blood blowing through the heart in just one direction. Two of the valves – the mitral valve and the tricuspid value – are known as the atrioventricular (AV) valves because they are located between the atria and the ventricles. The other two valves – the aortic valve and the pulmonary valve – are called semilunar (SL) valves because they are located in the arteries leaving the heart.


Related entry

   • heart valve disease


Related categories

   • HEART TOPICS
   • ANATOMY AND PHYSIOLOGY