You have been interested in the question from time to time, how many bones are in the human body, or how do we manage to recognize the tastes of various foods? The human body is a complex mechanism assembled from millions of cells acting as a whole. The complexities of the structure of our body are accessible only to scientists in the field of anatomy, studying each "detail" individually. Doctors suggest allocating 8 main parts of the human body: muscles, skeleton, respiratory system, cardiovascular system, genitourinary system, digestive system, nervous system, endocrine system and skin. For the normal functioning of the body, each of these parts must correctly "work" both individually and together. In this article, we will introduce you to several incredible facts about the human body that you probably have not heard.
#1
The thickness of human skin varies from 0.5 to 4 mm, depending on the area and body area. An adult with average growth and weight has skin with an area of 1.5-2 m², most of which is on average 3 mm thick.
#2
Our language is divided into 4 compartments, each of which is responsible for its taste bud. Bitterness is felt on the back surface, acidic products on the back side parts, salty receptors are located in front on the sides, and the tip of the tongue is responsible for the sweetness.
#3
To smile, a person needs to strain 14 muscles, and to frown, he uses 43 muscles. Although some doctors claim that a smile requires a lot of effort, no evidence has yet been provided.
#4
On the Internet, in many sources it is written that the strongest muscle of a person is language. This is actually not the case. The tongue is an organ, and calling it muscle is absolutely wrong. It itself consists of several muscles.
The strongest muscle of the human body is chewing. It is located in the jaw area. Interestingly, this muscle is also the most powerful in herbivores.
By the way, you can see the list of the most powerful people in the world on our site thebiggest.ru.
#5
The length of the human small intestine located between the stomach and colon is about 7.5 meters.
#6
The length of the colon is on average only 1.5 meters, but it is 3 times thicker than the small intestine.
#7
Most people lose about 18 kg of skin over their lives. Peeling can be pathological and non-pathological. In the first case, the outer layer of the epidermis thickens, which leads to the release of corneocytes in whole groups, and not separately, and the further formation of visible “flakes” of exfoliated skin.
#8
When we sneeze, air exits our nose at a speed of 160 km / h. And when coughing, the flow rate can reach 900 km / h.
#9
The average age of each eyelash is 150 days. After that, it falls out, allowing you to make a wish.
#10
The speed of "messages" sent to us by the brain is more than 386 km / h.
#11
In one day, more than 1,500 liters of blood pass through our kidneys.
#12
Each human eye has about 120 million rods responsible for the perception of black and white colors, while 6 million cones are responsible for “color”. The number and ratio of rods to cones may vary depending on night or day activity.
Want to know who has the biggest eyes in the world? Follow this link!
#13
How many times do you think a person blinks per day? 20,000 times!
#14
During the day, the human heart contracts about 100 thousand times.
#15
With the fastening of all human blood vessels, their length will be approximately 96,500 kilometers.
#16
The human brain contains an average of about 100 billion nerve endings.
#17
What we call the Adam's apple or “Adam's apple” is actually the frontal part of the thyroid cartilage and is called the protrusion of the larynx.
#18
Try sneezing with your eyes open. We bet that nothing will work out for you. Although some people know how to do it.
#19
To say at least one word, a person will need a systemic interaction of 72 muscles.
#20
When a person sneezes, his life support functions literally freeze, even his heart stops beating.
#21
Newborns are born without kneecaps. Their development takes place over several years, until by 3-6 years the patella will form from cartilage.
#22
The growth of the child is accelerated in the spring season.
#23
A person’s eyes remain the same size since childhood, but the ears and nose do not stop growing throughout life. Most actively, the eyes add in size during the first year of life, and then the growth rate of the eyes is greatly reduced.
#24
Did you know that the longer the finger, the faster the nails grow. The fastest nail grows on the middle finger. It turns out that on the feet the nails grow much slower (about 2 times) than on the hands.
#25
The composition of human nails is almost identical to the composition of the hairline.
#26
The "memory card" of the human nose can store about 50 thousand different smells and aromas.
#27
Not only the inner side of the fingers has its own unique pattern. The imprint of the language of each person can also boast of its uniqueness.
#28
Our brain generates enough energy to power a 25-watt electric lamp.
#29
If the heart did not pump blood inside the body, but pushed it out, it could spray a distance of a little less than 10 meters.
#30
The mucous membrane of the stomach is renewed every 4 days. If the shell remained old, the intragastric acids used to digest food would also damage the stomach by subjecting it to digestion.
#31
Almost all the muscles in the human body have a pair, and so our body has 320 muscle pairs.
#32
When we want to greatly cope with small needs, associations arise as if the bladder was swollen the size of a melon. In fact, the size of a full bladder is equal to the average grapefruit.
#33
The human legs are “equipped” with sweat glands in the amount of 500 thousand pieces. In each of the legs there are 19 muscles, enveloping 33 joints and 26 bones, held together by 107 ligaments. Interestingly, on average, the sweat glands on the legs secrete about 250 ml per day, which is equivalent to the capacity of a tea cup.
#34
For every 6.5 cm² of human skin, just over 20 meters of blood vessels fall.
#35
At the end of the 20s of the XX century, a surgeon from Germany Werner Forsmann was the first to invent heart catheterization, conducting a study on himself. To do this, he passed the probe through a vein in the elbow, leading it to the very atrium.
Pretty risky experiment, don’t you? But about the most terrible animal experiments, read on our website thebiggest.ru.
#36
The capabilities of the human brain allow it to read up to a thousand words in 60 seconds.
#37
Just one second is enough for our brain to perform 38 quadrillion operations. Even the most powerful computer, whose performance reaches 33 quadrillion operations per second, cannot boast of such speed.
#38
One sperm contains approximately 37 MB of male DNA, which is enough to conceive a child and pass on the father’s genes to him. On average, a man transmits about 1,500 terabytes of “information” during ejaculation.
#39
One person’s blood contains 1/5 milligram of gold. It turns out that in order to cast a medium-sized gold coin (about 8 grams), we need to “drain” about 40 thousand people.
#40
Some researchers suggest that the higher the person’s IQ, the more dreams he sees. The statement is controversial enough, since we cannot remember all the dreams. In any case, if a person does not see dreams at all, this does not mean that he is mentally retarded.
#41
During the average life span of a person, his heart pumps about 240 million liters of blood. This amount of blood can fill up to 200 cars.
#42
If you measure your height in the morning and in the evening, you will be horrified to see that in a day they “wore off” by 1-3 centimeters! Do not worry, and go to bed, during the night your growth will return to normal. The fact is that during the day, vertebral cartilages are compressed under the weight of the body, and straighten again at night.
#43
Our spinal cord sends signals about 10 billion nerve endings, while its length is less than 50 cm, and the width is comparable to the index finger of medium size.
#44
Eye muscles all day perform approximately 100 thousand contractions. This frequency is comparable to the frequency of the leg muscles during a walk of 80 km.
#45
The most “obedient” muscles of the human body are the eye. The time from the signal sent by the brain to their movement takes one hundredth of a second.
#46
The sperm is the smallest cell in the human body, and the largest is the egg. It is also called an oocyte, and is unique in that it can only be seen without using a microscope or other optical instruments.
#47
One hair on the human body lives from 3 to 7 years. For the whole life we lose from 60 to 100 curls. However, the process of baldness will become noticeable only when you lose more than half of the scalp.
#48
Keep your mouth shut! After all, a person secreted during his life with saliva can fill a railroad tank to the brim.
#49
Visual acuity of 1.0 is observed in only 30% of people. This means that more than 2/3 of the world's population have vision problems.
#50
We may lose some parts or entire organs while continuing to live. Of course, without 80% of the intestines, 75% of the liver and the whole spleen with the stomach, our life will not be the same, but we will not die. We can also part with almost any organ in the groin and pelvis, one kidney and one lung.
Summarize
We hope that you were interested in reading the facts about the human body that we have selected. What facts can you share with us? Write about this in the comments.