We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's tell you about the second heart and where it is located. Where is the ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Heart health is about more than just the heart itself. It's a two-way street between the heart and the rest of the body. However, many U.S. adults aren't aware of the connection between organs.

Science writer Mary Roach is fascinated by the human body, especially, she says, the "gooey bits and pieces of us that are performing miracles on a daily basis." Take the human heart, for instance. If ...

Leonardo Da Vinci was one of the first people to draw detailed sketches of human anatomy. His drawings showed that he noticed networks of muscle fibers on the inside of the heart. Da Vinci thought ...

Surgeons have developed two low-cost techniques to revive the hearts of people who wish to donate their organs after they die. The methods have been tested on only a small number of people, but they ...