the scalloped representation imprecisely portrays the true structure of the human, or any other species', heart. Yet, few of us pause to ponder the origin of this inaccurate image. In his book ...

Cardiac output can be calculated using the following equation: Stroke volume close stroke volumeThe volume of blood pumped from the heart with each beat. is the volume of blood pumped out of each ...

Originally appeared on the NOVA Web site Cut to the Heart. Let's get straight to the heart of the matter—the heart's job is to move blood. Day and night, the muscles of your heart contract and ...

The heart is the central organ of the human circulatory system. Both congenital and acquired structural changes in the heart can lead to hemodynamic alterations affecting the function of various ...

As the heart contracts and relaxes, blood pressure rises and falls. Blood pressure increases during ventricular systole and decreases during diastole.