The four valves of the heart prevent blood from flowing in the wrong direction, and open or close each time the heart beats. Learn more about them, here.

The chambers of the heart operate as a ‘double-pump’ system for the body’s circulation. In coordination with valves, the chambers work to keep blood flowing in the proper sequence.

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Being born without a heart valve (you have two, a right and a left) is a common congenital heart defect. Most people get it repaired with a cadaver valve — the valve from a dead person or a dead ...

SALT LAKE CITY--(BUSINESS WIRE)--Foldax®, Inc. today announced publication of the first clinical results for its TRIA™ biopolymer heart valve - the first polymer valve to be implanted in humans ...

Leonardo da Vinci's studies of human anatomy were hundreds of years ahead of their time - and his detailed drawings of the heart still resonate today, says a book by a cardiac surgeon.