The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

The aorta, a large blood vessel responsible for transporting oxygenated blood from the heart to the rest of the body, plays a ...

The heart, a powerful muscle with four chambers, pumps oxygen-rich blood to the body and receives carbon dioxide-laden blood for oxygenation in the lungs. Blood flows through arteries and veins ...

It involves malfunctioning valves in your heart that don't seal properly, allowing blood to flow backwards within the organ. The British Heart Foundation points out: "This means blood can flow the ...

If we scrutinize the mechanism of the heart, we shall find that it ... at the mouth of the aorta to force the blood through the vessels of the human body, is estimated by Hales, as being equal ...

Your heart is an exquisitely engineered pump ... around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. Human fertilisation.

open as wide as it should, restricting blood flow through the heart - this means less blood ... into the atrium with a biological valve from a human donor or made from animal tissue from a pig ...

The participants, all aged 50 and under, had no major heart ... blood flow to the brain — and a threefold increased risk of cardiovascular death, heart attack or stroke. Kamel’s team combed ...

The agency OK’d an artificial vessel to restore blood flow in patients ... it decided to measure whether blood was flowing freely through the high-tech tube 30 days after it was implanted ...

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 ...