What happens during systole in the heart?

During systole, the heart muscles contract to pump blood throughout the body. This phase is crucial in the heart's cardiac cycle as it is when the ventricles contract and forcefully eject blood into the aorta and pulmonary artery. During this contraction, the pressure within the ventricles increases, which opens the aortic and pulmonary valves, allowing blood to flow out to the systemic and pulmonary circulation, respectively.

The importance of this phase cannot be overstated, as it is essential for maintaining adequate blood circulation and delivering oxygen and nutrients to tissues. The effective contraction of heart muscles ensures that blood is pushed effectively through the circulatory system. Understanding this process is vital for comprehending how the heart functions and its role in overall health.