12 Fascinating facts about heart!!
1. If a person weighs 60kg, the heart would only weigh 300g, but it helps the rest of the body (59.7kg).
2. The heart pumps 7,560ℓ of blood.
3. "Thump Thump" sound from the heart is actually the sound of the valves of the heart closing.
4. When running, the heart has to beat faster so that it can get enough oxygen that is needed to use up more energy in order to provide more blood to the lungs than usual.
5. The length of the blood vessel connected from the heart is about 96,560km.
6. It's the distance of going around the entire earth twice but it only takes one minute for the blood to circulate our body through the blood vessel.
7. When we are born, the heart beats 130 times a minute, but when we become adults, it beats 70 times a minute.
8. Assuming that we live until the age of 80, our heart beats more than 3 billion times.
9. The heart muscles are made up of hundreds of millions of cells that have automaticity, which means that they can move on their own.
10. When we see a person that we like, the brain releases a hormone called noradrenaline. That's why our heart beat faster.
11. If your heart beats faster for no particular reason, you might have arrhythmia.
12. It's very hard to find people with heart cancer because the concentration of sodium in the heart is very high.
Revised by : Professor Yoo Byungwook at Soonchunhyang Seoul Hospital
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