The contraction phase of the heart cycle is called “systole.” This important phase occurs when the heart muscles contract and push blood out of the chambers into the arteries. Systole is the part of the cardiac cycle that allows the heart to pump oxygenated blood to the rest of the body.

During systole, the two ventricles of the heart contract simultaneously and forcefully. The right ventricle pushes oxygen-poor blood to the lungs, while the left ventricle pumps oxygen-rich blood to the rest of the body. The contraction of the heart muscles during systole is essential for maintaining proper blood circulation.

Systole is followed by the relaxation phase of the heart cycle, known as “diastole.” During diastole, the heart muscles relax, allowing the chambers to fill with blood. The atria and ventricles expand, creating space for blood to flow in and preparing for the next cycle of systole.

Understanding the different phases of the heart cycle is crucial in maintaining heart health. Any abnormalities in the contraction or relaxation phases of the cardiac cycle can lead to serious heart conditions. For example, a condition called “heart failure” occurs when the heart is unable to pump enough blood to meet the body`s demands.

In conclusion, the contraction phase of the heart cycle is called “systole.” This critical phase allows the heart to pump oxygenated blood to the rest of the body. By maintaining proper heart health, we can ensure that the cardiac cycle functions correctly, preventing heart diseases and conditions.