Interesting facts about human organs

Interesting facts about human organs are a great opportunity to learn more about the anatomical features of our body. Each organ performs its function, being a part of a single and well-coordinated biological mechanism. However, when even the most insignificant organ “fails”, a person can experience serious problems.

So, here are the most interesting facts about human organs.

manikin of the human body and organs

Also interesting: Interesting facts about iron and Interesting facts about mirrors

24 interesting facts about human organs

  1. The longest human organ is the small intestine, which reaches a length of 5-6 meters.
  2. Stomach acid can even dissolve metal objects. Because of this, the lining of our stomach is completely renewed every two weeks. When this renewal fails, a person develops an ulcer.
  3. The surface area of a person’s lungs is comparable to that of a soccer field.
  4. An interesting fact is that a woman’s heart beats faster than a man’s.
  5. The human heart pumps blood under such great pressure that it can spray a distance of 8-10 meters.
  6. The total length of all blood vessels is 100,000 km. By the way, it is twice the circumference of our planet’s equator.
  7. Scientists say that the human liver is involved in about 500 different functions.
  8. Did you know that the speed of nerve signals in the human brain is about 270 km/h?
  9. The human intestine contains approximately 50 trillion microorganisms, about 1.3 times the total number of cells in the body.
  10. The aorta is the largest arterial vessel in our body. Its diameter ranges from 20-30 mm.
  11. The human brain consists of 80% water.
  12. One-fifth of the oxygen in the human body goes to ensure normal brain function. This is why people feel lethargic and inoperative when there is an oxygen deficiency.
  13. A person can survive the loss of a spleen, a lung, a stomach, a kidney, the main part of the liver and even the intestines. But it would be hard to call it a full life.
  14. An interesting fact is that, statistically, heart attacks most often occur on Mondays.
  15. Over the course of life, the adrenal glands constantly decrease in size. While in newborns they are comparable in size to the kidneys, in older people these organs are difficult to see.
  16. The human brain generates more electricity every day than all the phones on earth.
  17. Did you know that about 50,000 cells die every second in humans?
  18. Every day a person takes approximately 23,000 breaths and exhales.
  19. Our brain is much more active at night than during the day.
  20. Curiously, the bladder can hold about 300-750 ml. Nevertheless, the desire to visit the toilet arises when this organ is filled to only one-third.
  21. Tanning poses a serious threat not only to the skin, but also to the blood vessels. After large doses of ultraviolet light from the Sun (see interesting facts about the Sun), it takes 4-15 months for the blood vessels to fully recover.
  22. A person’s head does not die until 15-20 seconds after being severed from the body.
  23. The human heart pumps over 3 million liters of blood per year!
  24. There are approximately 25,000 cells in the human inner ear that respond to sounds.


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