Learn the facts about the human body that may surprise you!

There are many facts we do not know about the human body. Here are some facts that may surprise you;

1.46% of the world’s people have O blood group.

2.The longest vein in the human body is the ‘Inferior Venacava’. It carries blood to the organs below the heart and to the heart itself.

3.Under normal circumstances, the average heart rate or pulse rate in an older man is 70 to 72 beats per minute. In women, it is 78 to 82 per minute.

4.In men, the beard grows due to a hormone called ‘hole’ (fluid secreted by the glands). This hormone occurs only in men. Women, on the other hand, have a hormone called estrogen, which prevents beard growth.

5. During sleep our body temperature drops by about one degree.

6.When the required amount of blood does not flow to the brain, the person becomes unconscious.

7.There are a total of 639 muscles in our body.

8.The strongest muscle is the tongue.

9.The tongue has about 3000 taste chambers. In old age it decreases to 800.

10. People do not have smooth glands on their lips.

11.The maximum number of nails in a day is 0.1 mm. Increases Nails grow faster on the fingers than on the toes.

12. In the fetus, blood is produced by the kidneys. But after birth, blood is produced from the bone marrow in humans.

13.There are about 30 billion nerve cells in the human brain.

14.The average brain weight of a man is 1380 grams and that of a woman is 1250 grams.

15.The old skin in our body is replaced by new skin within a month. Since it happens at a very slow pace, we don’t get the trick.

16.70% of the total weight in the human body is fluid.

17 There is no blood flow to the cornea and lens of our eyes.

18.People blink once every 6 seconds. One person closes their eyes every day (not at night) for about half an hour, depending on the time they blink.

19.The right side of the brain controls the left side of our body. Similarly, the right side of the body is controlled by the left side of the brain.

20.By the time a person is born and reaches 7 years of age, his or her heart beats about 270 million times.

21.By the age of 7, the human heart has pumped about 270 million liters of blood.

22.Even if a newborn baby cries, tears do not come out of his eyes. The reason for this is that the baby’s lacrimal gland has not yet developed.

23.The total length of blood vessels in an adult human body is about 1 lakh kilometres.

24.The average person spends about 20 years of their life asleep.