Did you place your hand on the left side of your chest ... During an average lifetime, the human heart will beat more than 2.5 billion times. Give a tennis ball a good, hard squeeze.

The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump and is divided into two halves - the right-hand side and the left-hand side. The right ...

The human heart is often associated with strong emotions like love. I affectionately tell my wife, kids and grandkids, “I ...

The ancient Greek philosopher and polymath Aristotle once concluded that the human heart is tri-chambered and that it was the ...