7 Really Amazing Heart Facts
March 18, 2008 by Kel
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How much do you Really know about your heart?
1. Put your hand on your heart. Did you place your hand on the left side of your chest? Many people do, but your heart is actually located almost in the centre of the chest, between the lungs. It is tipped slightly so that part of it sticks out and taps against the left side of the chest, which is what makes it seem as though it is located there.
2. Make a fist with your hand. If you’re a child, your heart is about the same size as your fist, and if you’re an adult, it is about the size of two hands made into a fist (ie wrap your other hand around the hand that is already in a fist).
3. Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than 2.5 billion times.
4. Give a tennis ball a good, hard squeeze. You are using about the same amount of force your heart uses to pump blood out to the body. Even at rest, the muscles of the heart work twice as hard as the leg muscles of a person sprinting.
5. The Aorta, the largest artery in the body, is almost the diameter of a garden hose. Capillaries on the other hand, are so small that it takes ten of them to equal the thickness of a human hair.
6. Your body has about 5.6 litres of blood. The 5.6 litres of blood circulates through your body 3 times every minute. In one day, the blood travels a total of 19000km (the distance of Cairns to Melbourne more than 6 times).
7. The heart pumps about one million barrels of blood during an average lifetime. That is enough to fill more than three supertankers.
Source - Heart Foundation Amazing Facts…Volunteer Speaker Program
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