Category: People, psychology, health

20 facts about the human heart

20 facts about the human heart

1. The heart of the average adult hits about 72 times a minute, 100,000 times a day, 36.5 million times per year and 2.5 billion times in a lifetime.

2. Kitchen faucet should be included in the whole head for 45 years, to pour the amount of water equal to the amount of blood pumped per heart human life expectancy.

3. The volume of blood pumped heart, can vary widely, from 5 to 30 liters per minute.

4. Every day, the heart produces enough energy to drive a car 32 km. Over a lifetime, this is equivalent to a trip to the moon and back.

5. Since the heart produces its own electrical impulses, it can continue to fight, even when separated from the body, as long as it is getting enough oxygen.

6. Heart rate (pulse) in the fetus is about two times higher than in adults, approximately 140 beats per minute. By the time the age of the fetus is 12 weeks, his heart pumping for 28 liters of blood per day.

7. Heart provides the blood of almost all the 75 trillion cells. Blood supply is absent only in the cornea.

8. For life expectancy heart pumps about 5.7 million liters of blood.

9. 5% of the blood supply in the heart, 15-20% goes to the brain and central nervous system, and 22% goes to the kidneys.

10. Heartbeat produces when slam heart valves.

11. The heart starts beating at four weeks after conception, and does not stop until death.

12. A newborn baby has about one cup of blood in circulation.

13. The ancient Egyptians believed that the heart and other major organs can move at will within the body.

14. Plato believed that thinking originates in the brain, and passion — in the heart. We mean just bodies.

15. Cocaine affects the electrical activity of the heart and causes a spasm of the arteries, which can lead to heart attack or stroke, even in healthy people.

16. A woman's heart beats faster than usual male. Male — about 70 beats per minute, the female — 78.

17. When the body is at rest, the blood takes only 6 seconds to reach from the heart to the lungs and back, only 8 seconds to get to the brain and back, and 16 seconds to reach the fingers and the back.

18. French physician Rene Laennec (1781-1826) invented the stethoscope when he felt pressed his ear to the chest of patients with too large sized bust uncomfortable.

19. Physician Erasistratus of Chios (304-250 BC. Oe.) Was the first to suggest that the heart functions as a pump.

20. Galen argued that the heart itself produces blood. However, the discovery of the circulatory system by William Harvey in 1616 showed that in the body there is a limited amount of blood and it moves in a circle.

SQL - 17 | 0,355 сек. | 7.4 МБ