The unexpected thing about the human body

Do you think the activity of every part of the body is controlled by signals from the brain and spinal cord? This is not true for the heart. The heart can beat itself without needing signals from two commanding bodies, even when taken out of the body.

Among us, perhaps no one would claim to have a thorough understanding of what is relevant to his body. Therefore, answering the following interesting questions can help you assess your own understanding of your body. Try to answer yourself before "glancing" through the answer.

1. If you connect your blood vessels, how long will they be? 80 or 60,000 miles?

That length will be 60,000 miles, equivalent to 96,500 km. Please do not forget that our bodies have trillions of cells and each cell must be led with blood.

2. Can people talk without vibrating the vocal cords?

May. In the case of whispering, we don't make the vocal cords vibrate. At that time, the mouth, teeth, lips and tongue created a light breath from the windpipe.

3. How much saliva does our body produce every day? A small cup or 1 liter?

The correct answer is over one liter. In daily life, we need lots of saliva. Without it, it will be very difficult to talk and chew, digest food. Saliva opens the digestive stage by turning starch molecules into sugar. It helps the wounds in the mouth heal. This explains why when the teeth bite the tongue, often the tongue rash heals.

4. The tonsils are usually removed by the doctor from the patient's body, does it have no role?

Incorrect. The tonsils are a component of the lymphatic system. They help the body fight infection. Sometimes they have to be removed because they are infected, no longer function to protect the body.

5. Which part of the body has the highest reserve capacity? Complete fluids or ovaries?

At birth, each ovary contains hundreds of thousands of eggs, some large degenerate before puberty. Throughout the life of women, there are usually only 400 eggs in the total reserve of about 10,000.

But that number cannot be compared to what a complete epidemic can do. During each sexual intercourse, the number of spermatozoa released from the stored fluid can reach more than 300 million. If in a month, the average number of intercourse is 8 times, the number of sperm penetrating the female body can be up to 2.4 billion.

6. Hairs, our hair often falls off and is often replaced by new fibers. So what kind of life is longer? Hair on the head or eyelashes on the eyes?

'Life' more than hair. The average life of a hair is 2-8 years. Meanwhile, eyelashes and eyebrows only 'live' for a few months.

7. On our hands, which nails grow fastest?

The nail of the middle finger grows faster. Normally, the longer the person has the finger, the faster the nail will grow (3.75 cm / year on average). What's even more bizarre is that if you use nail biting, they will grow 20% faster than regular nail clippers.

8. Natural use of fingerprints? For good identification to enhance grip?

Thousands of years ago, Chinese people knew how to use point forms on documents. Fingerprints are an excellent means for identification. However, this belongs to one's own intention. Naturally, small, fine wrinkles on the palms and each finger work to increase the skin's contact surface, creating high friction. Sweat caused by the glands located at each wrinkle helps us to grasp objects more closely.

9. Which country has the least odor on the body?

Koreans. Under their skin, they have less odor than any other group in the world.

10. In the condition that everything is the same, will a brown-eyed baseball athlete score more than a blue-eyed athlete?

It's correct. In general, people with brown or black eyes are more responsive than pale-eyed people. The pigments in brown or black eyes help the transmission of nerve impulses from the eye to the brain faster.

11. Is it true that many people are born with three eyes?

In the usual way, this is wrong. However, according to a broad and scientific understanding, it is common for each person to have a 'third eye' in the center of the brain called the pineal gland. It is like an eye because the pineal gland responds to changes in light. But instead of transferring images to the brain, it produces melatonine, a hormone that affects our mood.