How many sections does the human heart have?

The cardiovascular system is composed of the heart and blood vessels, it is responsible for supply oxygen and nutrients by circulating blood throughout the body. read more

The human heart is a muscle that lies left of the chest. It has about the size of a fist. The heart is like a pump that sends blood around your body. The blood gives you the oxygen you need . An average heart pumps about 70 millilitres of blood into your body with every beat. That’s about 5 litres every minute or about 7200 litres every day. read more

The heart is the hardest working muscle in the human body. The heart beats about 115,000 times a day, with an average rate of 80 times per minute, ie about 42 million times a year. For a normal lifetime, the human heart will beat more than 3,000 million times – pumping an amount of blood about one million barrels. read more