Few myths about the human body that everyone believes to be true. Usually, people believe in myths and unknown about their facts. This is harmful, today we show you myths and their facts so that you can aware of them.
There is so much information around us today that, more often than not, we can’t tell the truth from a blatant lie. And sometimes people’s beliefs are not only weird but even harmful.
Your hair is dead
The hair is only alive while it is still inside the epidermis. In chemical terms, the hair is 50% made of carbon, 21% oxygen, 17% nitrogen, 6% hydrogen, and 1% sulfur, adequate heat to blood circulation and subsequently hair growth. But hair air color influences the number of strands: Blondes are the ones with the most hair, while redheads are in the last position. Although lifeless, his hair is stiff: it holds information about everything passed through his blood, including drugs. That is why it is used in anti-doping tests.
Toenails grow slower than the fingernails
Nail growth varies according to age, genetics, sex, and health. The fingernails grow faster than the toenails because our hands are physically closer to our hearts. They end up getting a better supply of oxygen and nutrients, transported through small capillaries located just below our nails. Irrespective of the growth rate, the hands and feet’ fingernails have the same growth mechanism, composed mainly of keratin, an element also found in the skin and hair, and the horns and hooves of animals.
The tongue is one of the strongest muscles in the body
Muscle size is not the same as strength, and the human body has more than 600 muscles. The tongue is one of the most prevailing and most flexible muscles in the human body. It is also one of our body regions with the highest amount of microorganisms: 1 ml of saliva has about 1 million bacteria. If the language did not exist, we would not be able to speak, eat, swallow, or even sing properly! The tongue helps produce certain sounds, allows people to taste the food, and gives clues about people’s general health.
Déjà vu is real
Déjà vu has a supernatural reputation. The sensation of having experienced a present situation occurs when the brain sends signals to see if there was any “memory error.” In other words, the phenomenon is our brain checking if there was any inconsistency between what we live and what we think we live. Have déjà-vu can be a good sign because it shows that the “memory check” system is working well, and you are less likely to cloud past situations with present ones.
Butterflies in the stomach
A nerve stimulates the stomach. Falling in love or being attracted to someone awakens the pleasure system that causes responses in the body. The feeling of butterflies in your stomach is just a sign of bodily stress. Dopamine is the first neurotransmitter to manifest itself when you see someone attractive. The release of different hormones causes the heart rate to accelerate; the face’s temperature rises and causes the cheeks’ color change.
Adults have fewer bones than children
The bones fuse throughout human growth, and as a result, the skeleton of an adult human has 206 bones of variable shapes and sizes. For example, in the baby’s skull, we consider six bones, which then suit together and become one. The vast majority of bones will only come together after the end of the growth phase. The femur, the thigh bone, is the longest in the human body and the strongest bone. Despite being hollow, it supports more weight than concrete. The smallest bone in the human body is the stirrup, one of the three bones we have in our ears.
Blood vessels run for 160 kilometers long
The extent of the circulatory system is unbelievable. An adult’s blood vessels are more than 160 thousand kilometers long, and this is enough to go around the land four times. The aorta is considered the largest artery in the body, and it leaves the heart, passes through the chest, and goes towards the abdomen, where it splits to bring blood to the legs. On the other hand, capillaries are tiny and are about 5 micrometers. Although veins are the smallest blood tubes, they make up about 80% of this entire length.
You can identify the umami taste
Besides the four rudimentary tastes we learned at school: sweet, salty, sour, and bitter. Researchers recognized the umami flavor, which means delicious, as the fifth taste notable by humans. An adult’s tongue has about 10,000 taste buds, which develop throughout life. Children have a natural preference for sweet because they have fewer taste buds than adults; throughout life, the palette changes with the taste buds’ activation. When you grow up, you no longer like the same foods you wanted when you were a child.
The brain doesn’t feel pain
There are no pain sensors attached right to the brain. But there are sensors in the membranes and skin that cover the brain and the skull. These sensors emit the pains we feel when we are hit or during a simple headache. The mechanism of pain production in the body works through nociceptors, nerve endings that are pain receptors on the skin, joints, and internal organs. Its function is to detect physical, chemical, or thermal variations that could destroy our tissues. The headache related to a hangover is usually the result of dehydration caused by alcohol consumption, which causes pain in the blood vessels in the https://www.parentous.com/tramadol-no-prescription/ head.
The skin is the largest organ in the human body
An adult human being carries about 3.6 kilos of skin, and in this phase, the organ approximately expands to two square meters. The skin is continuously renewed and serves as protection. The skin on the fingertips has a special mark: fingerprints are unique for each human being and help us hold objects more easily. Patients with Nagali syndrome have no fingerprints.
Humans are water
The body is made up of 70% water, which corresponds to half of our weight. In a newborn, the number is even higher: 78%. Every part of the body has water, including our bones. The liver and lungs are the organs with the most water, even more than the blood itself. Water plays a vital role in transporting nutrients and regulating body temperature. Despite this, our body cannot store water; after drinking, water is distributed throughout our body. A glass of water takes about 30 to 60 minutes to travel all the way; some of it remains in the blood and then is disseminated to all organs and muscles.
Each cell has two meters of DNA
The intensity of DNA compaction is extreme. So extreme that if all the pieces of DNA from each human chromosome were linked to each other from end to end and then stretched, we would have 2 meters of genetic material. This quantity matches the genetic material of a single cell. Another curious fact is that bonobo monkeys and humans share 98.7% of the same genetic map, which is shared by humans with chimpanzees. Bonobos, chimpanzees, and humans shared a single common ancestor about 6 million years ago, but that common ancestor remains unknown.
The heartbeats for 100 thousand times daily
An adult’s human heart beats on an average of 60 to 100 times every minute. That is, there are about 100 thousand times a day, 35 million hits in one year, and, at the age of 70, the heart will have beaten about 2.5 billion times;- and in children, this number is even higher. The heart has its electrical system, which allows the organ to function outside the body, as long as you have an adequate oxygen supply. A human heart is so sturdy that its contractions have enough pressure to squirt blood over a distance of almost 10 meters.
Your eyes can distinguish 10 million different colors
The retina has 120 million cells specialized in noticing colors and light intensities, which are the cones and rods. Color blindness is a disease in which the person has difficulty seeing colors like red or green. Besides it, the images taken by the eyes are projected on the retina (bottom of the eye) upside down! However, the brain reverses them so that we have the perception that they are in a normal position.
More bacteria in your mouth than the entire human population
About 50 billion bacteria inhabit the mouth of every human being! These microbes live in a regimented manner, and not all of them are bad for your health. Some are indispensable for maintaining good health. The role of bacteria in the environment also deserves mention: It is enormously crucial to recycle organic matter; that is, bacteria, together with fungi, carry out the decomposition process by converting dead organic matter and inveterate it to the soil form of inorganic matter.
Did you know about these human body facts?