20 great things about the human body

Human body parts have great structure and ability that not everyone knows.

>>>26 extremely special things about the human body

1. The stomach's digestive acid is strong enough to dissolve zinc. However, the cells in the stomach lining change very quickly, leaving the acid inadequate to dissolve them.

2. The lungs contain more than 300,000 million capillaries (small blood vessels). If connected together from beginning to end, they will be 2,400km long.

3. A man's testicles produce 10 million new sperm cells every day, enough to create the world's population in just 6 months.

4. Human bones are as strong as granite when supporting weight. A block of bone-size matchbox can support 9-ton objects (ie 4 times the capacity of a concrete block of the same size can withstand).

5. Nails and toenails develop from root to tip for 6 months.

The human body contains many mysteries.(Artwork: wikihow)

6. The largest organ on the body is skin. An adult man has a skin area of ​​about 1.9m ² . In everyone's life, the skin constantly flakes around 18kg.

7. When sleeping, people can increase height by about 8mm. The next day, the height will return as before. Scientists reason that the cartilage disk is compressed like a sponge due to gravity when people stand or sit.

8. On average, a Westerner eats 50 tons of food and drinks 50,000 liters of liquid throughout his life.

9. Each kidney has a million separate filters. It averages about 1.3 liters of blood every minute and discharges 4 liters of urine daily.

10. The muscles in the eye move about 100,000 times a day, which is equivalent to walking 80km a day from the foot.

11. In 30 minutes, the average body produces enough heat to boil 1.9 liters of water.

12. Single human blood cells take only about 60 seconds to make a complete ring in the human body.

13. People are basically visual creatures. The eyes receive nearly 90% of all the information people receive from their surroundings.

14. Female ovaries contain nearly half a million egg cells, but only about 400 cells have the opportunity to create a new life.

15. Similar fingerprints, each has a unique tongue mark.

Human smell can remember tens of thousands of scents.(Artwork: blog.doctoroz)

16. Adults have fewer bones than a baby. When they were born, humans had 350 bones, but they joined together during development, so there were only 206 bones later.

17. Although our sense of smell is not as sensitive as predators, it can remember up to 50,000 different scents.

18. The small intestine is four times longer than the average height of an adult. If not neatly placed in the abdominal cavity, they will become quite messy.

19. On each 6.45cm ² , the skin contains about 32 million bacteria. However, most of them are harmless.

20. Throughout life, an average person produces 25,000 liters of saliva, enough to fill two swimming pools.