Mechanical Functioning of HeartPublished on 14/8/2018 & updated on 14/8/2018
The other valve called semilunar valve is opened due to the pressure inside right ventricle. Now the blood flows to the lungs through pulmonary artery. Lungs are the organ, which provides purification of blood in our body. So now, when the blood reaches lungs, blood is oxygenated and given to left atrium via pulmonary veins. Here we have another valve named Mitral valve or Bicuspid valve. Once the left atrium is filled with pure blood, the mitral valve is opened. The blood is pumped to left ventricle. The valve is closed, when pressure is high in the left ventricle. During the cycle, left ventricle is filled with blood and opens the aortic valve. Through aortic valve blood is sent to body organs like hands, legs, head and coronary artery. Pumping action is divided into two parts as systole and diastole. The period of ventricle contraction is Systole. The time for the blood to fill the heart chamber is Diastole.
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