So it results in down stress within the for each ventricle versus for each atrium above. The newest atrioventricular valves discover partially. This is exactly accompanied by brand new atria contracting and that forces bloodstream thanks to the fresh atrioventricular valves. In addition it shuts the latest regulators from the vena cava and pulmonary vein. It prevents backflow away from bloodstream.

Stage 2 – Ventricular systole, atrial diastole – One another atria following relax. Each other ventricles bargain simultaneously. So it causes highest stress in the ventricles compared to atria a lot more than. The difference when you look at the pressure shuts for every single atrioventricular device. That it inhibits backflow from bloodstream with the per atrium. Higher stress in the ventricles compared to the aorta and you may pulmonary artery opens the partial-lunar regulators and you can bloodstream is actually thrown to your this type of arteries. Thus bloodstream flows through the systemic circulatory system via the aorta and vena cava and you may from the lungs via the pulmonary boats. Read More Stage 1 – Ventricular diastole, atrial systole – One another ventricles relax concurrently