What is the definition of systole in terms of blood pressure?

Systole refers to the phase of the cardiac cycle during which the heart muscle contracts and pumps blood into the arteries. In terms of blood pressure, it specifically describes the maximal force of blood against the walls of the arteries. This peak pressure occurs during ventricular contraction when blood is ejected from the heart into the aorta and pulmonary artery, resulting in the highest reading on a blood pressure measurement.

Understanding systolic pressure is essential in assessing cardiovascular health, as elevated systolic pressure can indicate conditions such as hypertension, while normal levels are vital for ensuring efficient blood flow throughout the body. Recognizing the context of this definition clarifies why it is associated with the maximized force exerted by the heart during contraction.