the human heart will beat more than 2.5 billion times. Give a tennis ball a good, hard squeeze. You're using about the same amount of force your heart uses to pump blood out to the body.

Day and night, the muscles of your heart contract and relax to pump blood throughout your body. When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream ...

The man, who was in his 40s and suffering from severe heart failure, was also the first person to leave the hospital with a titanium heart. He is recovering well after getting a new, donor heart ...

This clip is an introduction to the human heart. We find out about its location within the body and its function as a pump. The heart sits within the chest cavity between the lungs and is about ...

Astronauts Suni Williams and Butch Wilmore are back on Earth - but what has nine months in space done to them?

For decades, replacing a failing human heart meant waiting—often desperately—for a donor. But in a hospital in Sydney, that ...

The patient, an Australian man in his 40s, lived with his fully functional heart implant long enough to be discharged from ...

It also shows how the pacemaker cells restart her heart after the surgery. This short film is from the BBC series, Inside the Human Body. The 3D footage brings the topic to life and would enhance ...

There’s clearly more to do here; some basic questions, like does the human body have a physiological reason for a pulse, remain to be answered. Luckily, the BiVACOR heart can be programmed to ...

Like any other muscle, the heart doesn’t need to work as hard ... “Space is just not very hospitable to the human body,” said Emmanuel Urquieta, vice chair of aerospace medicine and ...

The human heart is a vital organ that pumps blood through the body. You probably don't even think about it, but your heart is always working — it beats about 100,000 times a day, which adds up ...