"So the heart is the beginning of life, the Sun of the Microcosm, even as the Sun deserves to be call'd the heart of the world; for it is the heart by whose virtue and pulsation the blood is moved, perfected, made apt to nourish, and is preserved from corruption and coagulation; it is the household divinity which, discharging its function, nourishes, cherishes, quickens the whole body, and is indeed the foundation of life, the source of all action."

- William Harvey, 1628

Welcome to The Interactive Heart: an Online Discovery. Here you can not only learn about how the heart functions, but you can also see it in action. You can not only learn from our site, but you can also add to it . . . so go ahead and dive in, contribute, share your ideas with the world, and become part of our interactive community. And remember, we need your contribution.

Not sure where to start? Take our site tour.

To view our site correctly you will need either Internet Explorer or Netscape 4.0 or higher. Some of the interactive parts of our site require the flash player plug-in and the quicktime plug-in.