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.

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

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

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 ...

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.