Amazing curiosities of the human body that you did not know
The human body is fascinating. Although in general we know a lot about it, it also hides a multitude of curiosities that not everyone knows. Take note of some of the most amazing ones.
Our body is a very complex machine capable of carrying out all the processes necessary for life. Its composition and operation are truly fascinating and, although we have a lot of knowledge about it, there are many curious facts about our body that we do not know.
If you are a curious person, you are surely wondering why we yawn, if it is true that nails and hair continue to grow after death or how many dead skin cells we remove per year.
So you can solve any of these questions, below we leave you some amazing curiosities about the human body:
- The mouth produces approximately a liter of saliva a day.
- Wisdom teeth ceased to be useful thousands of years ago. As the brains of our ancestors grew, the space for the mouth was reduced, displacing the third set of molars.
- In many cases, the brain is more active when we sleep than when we are awake.
- Although yawning remains a mystery to scientists, it is believed that one of the reasons why we do it is to help cool the brain.
- If we place the blood vessels of an adult one after the other, they could circle the Earth four times.
- The body emits a small amount of light, although it is too weak for the human eye to see.
- We have an average of 67 different species of bacteria in the belly button.
- Although it is a widely held belief, nails do not actually grow after death.
- Humans are the only animals with a chin.
- We lose about 4 kg of skin cells each year.
- As we breathe, most of the air goes in and out through a nostril. Within a few hours, the workload shifts to the other nostril.
- Our nose can detect approximately one trillion smells.
- About 8% of our body weight corresponds to blood.
- Although we have two kidneys, we only need one to live.
- Information travels to the nerves at a speed of about 400 km / h.
- The left lung is about 10% smaller than the right.
- We are the only known species capable of blushing.
- The skin is the largest organ and it can represent 15% of our total weight.
- The tongue is made up of eight interlocking muscles, with a structure similar to the trunk of an elephant or the tentacle of an octopus.
- Hair grows about 15 cm a year. The only thing that grows faster in the body is the bone marrow.