Heart in Rhythm
The heart is one of the human body’s most powerful muscles. It consists of two ventricles and two atria, and is barely bigger than a closed fist. Approximately 100,000 times a day, an electrical impulse causes thousands of muscle fibres to contract and relax in sync, supplying all our cells and organs with oxygen and nutrients via the blood vessels.
Five amazing facts about your heart:
- The first heart cell starts to beat as early as four weeks.
- Everyday your heart beats 100 000 times.
- Your heart is no bigger than the size of your fist.
- Each minute your heart pumps 5 litres of blood.
- Happiness helps to lover risk of heart disease.
More informationen about heart diseases: