The ventricular ejection phase is after the isovolumetric contraction phase. The ventricular ejection phase of the cardiac cycle is when the pressure in the ventricle becomes higher than the pressure in the aorta or pulmonary trunk (depending on which ventricle we are looking at). The high pressure in the ventricle will cause blood to be ejected from the ventricle into the aorta or pulmonary trunk. This is because blood moves from higher to lower pressure. Another way to consider the high pressure concept, is to picture the blood having a high kinetic energy (bouncing on the walls of the ventricle) and the blood molecules want to decrease their kinetic energy by moving to a less crowded area (such as the aorta or pulmonary trunk). Also, after the ventricular ejection phase, the blood will attempt to move back into the ventricle from the aorta or pulmonary trunk. This is inhibited by a semilunar valve closing (which is the dub sound in the common heartbeat sound, lub dub).
Blood flows into the relaxed atria while the ventricles contract. <rephrased> The ventricles contract, carrying blood into the aorta, and blood flows into the relaxed atria.
Once the ventricles contraction phase is over, the diastole starts. Then all the four chambers are in diastole, till the atria start to contract.
Systole is the correct answer
Systole
This is caused by a difference in pressure: higher pressure in the ventricle than in the atrium. As the atrium contraction finishes filling the ventricle with blood, the equalization of pressure allows the valve to fold back toward the atrium. The beginning of the contraction of the ventricular cardiac muscle causes higher pressure in the ventricle than the atrium, and this seals the valve shut. The valve opens again as the ventricle relaxes, and the atrium, filled again with blood, begins another contraction.
The ventricles relax during diastole.
The auricles will contract during the systolic phase of the cardiac cycle. This is one of the numbers that is measured when a patient has their blood pressure taken.
Blood flows into the relaxed atria while the ventricles contract. <rephrased> The ventricles contract, carrying blood into the aorta, and blood flows into the relaxed atria.
Once the ventricles contraction phase is over, the diastole starts. Then all the four chambers are in diastole, till the atria start to contract.
The cardiac cycle of the heart has two phases - the diastole phase and systole phase. In the systole phase, the ventricles contract and pump blood into the arteries.
Systole is the correct answer
diastole is when all 4 chambers of the heart are at rest after a cardiac cycle systole is the term used to describe the heart during a contraction
ventricular diastole
AV valves close during the systole phase of the cardiac cycle.
Diastole is the relaxation phase. Systole is the contraction phase. If you put these phases together you have the Cardiac Cycle...
Diastole is the relaxation of the cardiac muscles after having contracted and pumped out the blood into the arteries.Systole is the contraction of the ventricles of the heart which pushes the blood out of the heart.
diastolic