So it leads to straight down stress during the for every single ventricle versus per atrium significantly more than. The brand new atrioventricular regulators discover partially. This is certainly accompanied by the newest atria hiring and therefore forces bloodstream compliment of the brand new atrioventricular regulators. Additionally shuts the fresh new regulators throughout the vena cava and you will pulmonary vein. So it inhibits backflow off blood.
Stage dos – Ventricular systole, atrial diastole – Each other atria upcoming calm down. One another ventricles contract simultaneously. It contributes to high stress on the ventricles compared to the atria a lot more than. The difference within the tension shuts each atrioventricular valve. It suppress backflow of blood into the for each atrium. High pressure in the ventricles compared to aorta and you can pulmonary artery opens up the fresh new partial-lunar valves and you can bloodstream is ejected to the these types of arteries. (more…)
