What is the term for the amount of blood pumped by the heart in one beat?

The term for the amount of blood pumped by the heart in one beat is known as stroke volume. Stroke volume specifically refers to the volume of blood that is ejected from the left ventricle of the heart during each contraction. It is a key measurement in understanding the heart's efficiency and performance during physical activity, as it helps determine how much blood is delivered to the body's tissues with each heartbeat.

In contrast, cardiac output refers to the total volume of blood pumped by the heart in one minute, which is a product of stroke volume and heart rate. Systemic volume does not represent a standard term used in cardiovascular physiology, and blood pressure measures the force exerted by circulating blood on the walls of blood vessels, rather than the volume of blood pumped by the heart. These distinctions highlight the unique and specific definition of stroke volume in relation to heart function.