Keywords heart anatomy, fluorography, venous catheterization, blood flow, cardiac cycle, right atrium, left atrium, coronary arteries, selective opacification, physiological data Email us at ...

The semilunar valves stop the back flow of blood into the heart. There is a semilunar valve where the aorta leaves the left ventricle and another where the pulmonary artery leaves the right ventricle.

A heart murmur is a sound often characterized as a "whooshing" or rushing of fluid that can be heard between heartbeats. As ...

For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope with high pressure blood flow and ... away from the heart (usually ...