The heart's performance as a pump The heart's function is to pump the blood and circulate it round the body. We assess the heart's performance by measuring how much blood it pumps out each minute.

Scientists are starting to understand more about the small heart muscle fibers that Da Vinci showed in his illustrations over ...

Valentine's Day is all about the hearts: heart-shaped chocolates, cards, balloons and even pizza. But the heart hasn't always ...

Only cardiac muscle tissue, comprising cells called myocytes, is present in the heart. In this article, we discuss the structure and function of cardiac muscle tissue. We also cover medical ...

The Western cultural idea of the heart has taken on innumerable meanings. It is the center of all functions, feelings, and thoughts. It is the seat of the soul and the center of courage and ...

Calcium plays an important role in the heart’s function. The calcium ions regulate the muscle proteins that initiate contraction, helping the heart pump efficiently and maintain a regular rhythm.