The contraction phase of the heart is known as systole. This is when the heart muscle contracts and pushes blood out of the chambers and into the blood vessels.

During systole, the atria and ventricles contract in a coordinated manner. The atria contract first, pushing the remaining blood into the ventricles. The ventricles then contract, pushing blood out of the heart and into the arteries.

Systole is an essential part of the cardiac cycle, which is the series of events that occur in the heart during one heartbeat. The other important phase of the cardiac cycle is diastole, which is the relaxation phase of the heart.

It`s important to note that systole and diastole are not separate events. Instead, they are two phases of a continuous cycle. Systole and diastole work together to efficiently pump blood throughout the body.

In order for the heart to effectively contract during systole, it needs a healthy supply of oxygen and nutrients. A healthy diet and regular exercise can help support heart health, as can managing risk factors such as high blood pressure, diabetes, and obesity.

In summary, systole is the contraction phase of the heart where the heart muscle contracts and pushes blood out of the chambers and into the blood vessels. It is an essential part of the cardiac cycle and works in tandem with diastole to ensure efficient blood flow throughout the body. Maintaining good heart health through a healthy lifestyle and managing risk factors is important for overall cardiovascular health.