What are some strange physical phenomena in humans? How many have you hit?

What are some strange physical phenomena in humans? When the human body feels cold or scared, there will be a layer of goosebumps on the body, this is because there is a small muscle under each hair, called the erector hair muscle, the gills often make a sound when chewing things, and when moving the joints, such as breaking the finger joints, sometimes a "pop" sound will be heard, this is because there is some lubricating liquid in the joint cavity.

The scene where I lose weight in a dream, the scene where I suddenly have convulsions while sleeping, the scene where I am suddenly awakened while sleeping, the scene where I get goosebumps, and the situation where my eyelids are jumping. I've been in all of these situations, and I'm feeling very strange.

Today, let's talk about what special physical characteristics are there in human beings?

Darwin's nodules", if you find that your friends or your ears have a protruding part on the ear that looks like a fairy on TV, this is a congenital "Darwin's nodule", and it is a very rare physical feature of humans, which also proves that our human ancestors primates also have such ears, and in Spain for some reason, 10% of adults have this "Darwin's nodule" trait. <>

"In our world, only 22% of people can move one ear, and only 18% of people can move two ears.

"The hole in front of the ear has a very rare feature in front of the ear in many people, called the hole in the anterior sinus, but less than 1% of the Western population suffers from this hereditary birth defect, and it is very common in other parts of the world, with 4 to 10% of the population of Asia and Africa having this rare feature. <>

Licking your elbows"Less than 1% of people in the world can do a very special feature that is to lick their elbows, if you want to do this, then your ligaments need to be very soft, and you also have to move your elbows to your mouth or where you can touch them, to complete this action, you also need to have a longer tongue, so that you can be closer to the first weight, at least two points to meet a little or two points to be able to lick your elbow.

Dimples "Only 25% of the world's people have dimples, and dimples are also known as a representative of beauty, not everyone has them, and dimples have dominant inheritance This natural dimple is caused by the defects of the cheek muscles of the human body, so when smiling, the muscles of the face pull each other, which will produce a depression, dimples are a very special physical feature. <>

Moving ears. Twenty-two percent of the world's population can only move one ear, and 18 percent can move two.

Toes apart. Only the thumb and little finger of the human foot have independent muscles, most people can only move the thumb, and very few people can move the little finger alone.

Dimples. 25% of the world's people have dimples, and dimples are actually a physiological defect, and the place where dimples are actually due to defects in the development of facial muscles.

The thumb is bent backwards. Only 25% of people are able to bend their thumb 90 degrees backwards, which is due to genetics.

If you have protruding parts of your ears that make you look like a genie, then you have congenital Darwin's nodules.

This rare human trait proves that the primates, the ancestors of humans, also had such ears. In Spain, for some reason, 10% of the adult population has this trait. Another rare feature found on the human ear is this small hole called the anterior auricular sinus.

Less than 1% of the Western population suffers from this inherited birth defect, but it is more prevalent in other parts of the world, with 4-10% of people in Asia and Africa having this trait.

Tongue rolling, more than half of the people can roll the tongue, and some people can roll the tongue twice or even the lotus tongue. The ears move, 22% of the world's people can only move one ear, and 18% can move two. Dimples, only 25 percent of people have dimples.

The mystery of the human body vision refers to some abnormal phenomena in people's bodies, and these abnormal phenomena are common to people, such as crying, trembling, gray hair, etc., so why does the human body have this vision? Scientists have made an analysis of the mystery of the human anomaly. Let's take a look at the mystery of human anomalies and scientific explanations.

Causes of physical anomalies Human anomalies refer to some abnormal phenomena on the human body, and these anomalies are common to people, such as people who will tremble when they are sick, cry when they are injured, and the hair on their sideburns will turn white first when they are old, etc., which is the most common in people's lives, but have you ever wondered why this phenomenon occurs? Let's take a look at the mystery of the human anomaly to see the scientific explanation.

1. The reason for the body trembling when you are sick

Body tremors are often associated with cold, but there is another cause: shivering is an immune response of the body to an external infection. Relevant researchers in the field of autoimmune infection said that the temperature of the human body is generally constant 37 determined by the hypothalamus in the brain, and when a person is sick, bacteria are detected in the hypothalamic shed, which then triggers an immune response to raise the temperature of the human body, which is the human body will feel the whole body is hot.

The brain causes the cells throughout the body to function to produce heat, including muscle cells that begin to contract and relax more quickly, known as shivering.

2. When the hair is gray, the temples are the first to start graying

Hair all over the body of the human body generally begins to turn gray at different rates, usually the temples or beard that turn white first. Researchers in cell biology said that the emergence of this phenomenon is mainly due to the formation and development of embryos, human stem cells determine the distribution of melanocytes in different parts of the body, it may be that the melanocytes of the temples are less distributed, so the hair of the temples is more prone to graying, which is one of the mysteries of the human anomaly.

3. The reason why the heart is located on the left side of the body

Like many organs in the body, the heart is not located in the middle of the body, but behind the breastbone, slightly to the left. According to a researcher who studies heart disease, the left side of the heart is due to the asymmetry that developed in the first stage of human evolution. As the human digestive system, circulatory system and central nervous system become more and more complex, human organs need to be placed in the body in a way that maximizes their functions, and if all organs are symmetrical in the body, it is impossible to effectively use the space in the body.

Even 1 in 10,000 people's internal organs are located in the opposite direction of ordinary people's internal organs, but this does not cause much damage to their body foundation, which is one of the mysteries of the human body's vision.

The Earth is a mysterious place, and many of the everyday things around it remain unexplained. We have so much advanced technology and scientific knowledge, but we still can't find answers to the following perplexing things.

The human skull is so hard that it is said that only seeds can separate it, but in the fetus the skull is separated, and when it is time to give birth, the skull comes together. Human ** cannot be soaked in water for a long time, but in the fetus, it is soaked in amniotic fluid for several months.

Intervertebral discs, also remnants of evolution left over from quadrupeds, have some problems with humans walking upright. The intervertebral disc has been pinched for a long time, and the degenerative disease of intervertebral disc herniation has plagued almost everyone in their old age. The foot, facing an upright walk, the human foot itself is a design flaw, and we are told to land on the ground in front of the foot in order to avoid injury when running.

Look at our pet cats and dogs, their feet are in the ** position, but we are under pressure with our ligaments and tendons. Our feet are still evolving to adapt to walking upright, but at this stage they are affecting the limits of human movement and are more susceptible to damage. Wisdom teeth, the degree of wear and tear of human teeth is not as good as that of ancestors, and the last tooth on each side is often held in the gums and cannot grow, such as myself.

Wisdom tooth abnormalities are quite common and can cause problems such as anti-periodontitis. As the human head gets bigger and bigger, it is conceivable that in the future, free childbirth will be quite dangerous, and human childbirth may become a social behavior that must be done with the help of medical technology. However, it is also possible to evolve larger buttocks to fit the baby's skull.

It's amazing It's not what people want to get nowadays.