AMAZING Facts About the Human Body!!

From delayed eyesight to a stomach of steel,
stay tuned to number 1 to find out which part of the human body can actually grow back! Number 10: Delayed Eyesight. You would think that our eyes register what
they see right away…this very instant…but this is only partially true. Here’s what actually happens. Our eyes do register the outside world right
away, but it takes some time for the brain to “get the signal” from the eyes. So, it does all happen that very second…but
not that very millisecond. It turns out that humans pick up the visual
signals immediately, but our brain cannot decipher them for at least 12-13 milliseconds. At MIT, a research was conducted, and the
subjects were shown a series of images, with every single image lasting from 13 to 18 milliseconds. Then, as the experiment went along, the exposure
time for every image got shorter and shorter. 13 milliseconds was the lowest threshold for
image recognition. Since the brain doesn’t register the visual
input right away…we can say that, technically speaking…we’re all living in the past. Far out! Number 9: Invisible Stripes. Well, it turns out our bodies are covered
stripes, but they happen to be invisible. Ever heard of Blaschko’s Lines? At the start of the 20th century, there was
a German doctor named Alfred Blaschko, whose field of expertise was dermatology, or, the
study of skin. After some research, doctor Blaschko found
out that the moles and rashes on human skin actually weren’t randomly dispersed, but instead
had a particular order. He started noticing patterns that moles and
rashes followed, and those patterns were separate from the patterns of nerves or blood vessels. Blaschko thought that he got them all, but,
as technology advanced, it was later discovered there were even more than the original number. These patterns, named after the doctor who
discovered them, are a direct result of our cells’ migration as they move around to make
room for new cells as our body grows. The amazing thing is that the shapes of the
patterns are different for each section of our body; so, there is a V shape on our back,
and an S shape on our sides and our chest, whereas our head is covered in wavy shapes. Who would have thought, eh? Number 8: The Plot Thickens. Our body was designed as the perfect mechanism. It protects itself, and prepares for bad situations
on the horizon. As an example, when stress and anxiety hit
our body, it responds by activating blood coagulation. The reason for this is to prepare for potential
“damage to the system;” if a physical injury happens, there is a high chance of hemorrhage. The blood can begin to thicken in advance,
so that clotting can be encouraged and prepared for an incident. However, this can often lead to more trouble. Although quick blood coagulation is a good
measure in the short-term, it might result in fatal consequences. Studies have shown that those patients with
anxiety disorders stand a 3-4 times higher chance of dying from heart failure, because
stress-caused coagulation can easily lead to heart attack. So, don’t get too angry, or too nervous…it
really isn’t good for you! Number 7: The Brain Ignores the Nose. This may sound like an English idiom, but
it’s not. It’s actually one of the facts of life. Yup, our brain simply ignores our nose…not
as a body part, but as a visual object. There is a neurological process called “sensory
gating,” which is nothing more than a fancy term for the filtering of information. The human brain is constantly being bombarded
with all kinds of information, in the form of visual, audio and other sensory stimuli…and
it has to sort out what the heck is going on with all of that data. This is why the brain came up with a brilliant
idea: to filter out the given information and make a priority list. Basically, our brain is such a skilled computer…that
it can literally notice every single stimuli in the blink of an eye; every breath, every
tongue movement and motion the body takes. It just chooses not to…because it doesn’t
have to. There is no practical need for it. Have you ever tried looking at your nose? Okay, so, you actually
CAN do it, but there is no need for it…because there’s plenty of more important stuff to
pay attention to. So, the nose gets literally overlooked. Now you’re looking for your nose! Tell us if you find it in the comments below! While you’re there…don’t forget to hit that
subscribe button so you can stay up to date will all of our newest videos! Number 6: Completing the Blind Spot. The blind spot is an interesting phenomenon
of our visual senses. Literally speaking, it is any obscuration
of the human visual field. It occurs because there are no photoreceptor
cells to detect light on the optic disc; thus, that part of the visual field is literally
invisible to us. The blind spot (or the blind point, as it’s
also referred to) was discovered by a Frenchman named Edme Mariotte in the 1600s. So, how come we don’t notice these blind spots? Well, we should thank our brain for it. Again, the brain proves to be a heck of a
computing device. Although one part of the visual field is missing,
it’s not all of it. So, the brain does the next logical thing…it
assumes. Yup, the brain processes the given data, and
logically draws the conclusion. For example, if you’re at the beach, and there’s
sand all around you, the brain will “fill in the gap” and tell itself that there is
also sand in that missing part of the visual field. Crazy, right? Number 5: So Many Muscles. We’re still in the believe-it-or-not section
of our list. So, check THIS out! No one can tell you how many muscles you’ve
got. Seriously! It does sound unbelievable, but it’s true. The problem with counting all the muscles
in the human body stems from the problem of muscle categorization; there is no consensus
on what should and shouldn’t be considered a muscle. Basically, all of our muscles are separated
into three categories: skeletal, cardiac and smooth. Skeletal muscles are those that are moved
voluntarily, like a leg or an arm. The cardiac muscle is a single, involuntary
muscle in the walls of the heart. But the troublemakers are the smooth muscles,
found in the skin, blood vessels, the urinary tract, and more…because no one can tell
precisely how many of them are. So, regarding the muscles, our body is still
unexplored territory. We’re some mystery, folks. Number 4: So Many Tears! Just like the muscles, we have three distinct
types of tears. Think about it for a moment, it’s not the
same when you’re crying while cutting onions and when you’re heartbroken, right? Well, the reason is that it’s from different
types of tears. The first category is the so-called basal
tears: they occur all the time, and are actually necessary for our survival (who would have
thought we needed tears to survive, eh?). But, these tears are produced to keep our
eyes lubricated and wet 24/7. Then, there are reflex tears: the dreaded
onion-tears, but also those happening as a result of severe eye irritation…foreign
particles, chemicals, etc. And then, the famous psychic tears: from laughing
too hard, crying over a break up, hitting your shinbone against something hard, etc. And the reason why these three types are different
is their evolutionary purpose. Basal tears are there to keep us alive and
well and are thus full of antibacterial elements, salts and oils; while the other two types
contain hormones that are relevant to the set of emotions we’re expecting…anger, pain,
sadness, joy, sorrow, etc. Number 3: The Stomach of Destruction! This might sound like a B-horror movie from
the 50s, but it’s actually quite a fitting description of our internal organ. Our stomach is a real powerhouse. It’s in charge of a very important task: to
digest the food we eat and get rid of all harmful things that reach it, such as bacteria
and the like. In order to do so, the stomach has to have
solid weapons. And it does…meet gastric acid. Gastric acid is a combination of hydrochloric
acid, potassium chloride, and sodium chloride, and it’s one potent combination, that’s for
sure. When something enters it, it activates the
digestive enzymes and kills all the bacteria in its radius. The absolutely amazing thing is that gastric
acid is very, very strong; with pH from 1.5 to 3.5 it ranks high on the acidity scale,
however, it doesn’t harm the inside of the stomach lining! Crazy enough, numerous experiments have been
conducted, proving that gastric acid even dissolves some objects made of stainless steel. Number 2: The Brain Feels no Pain. When your leg hurts, or when you’re hit somewhere
on your body, the nerve impulses travel fast and reach the brain, where they “report” about
the pain. Without these pain receptors, as they are
called, there would be no pain…you simply wouldn’t be able to feel any. But what’s interesting is that the brain,
itself, actually cannot feel any pain; the brain simply registers the input, interpreting
it as “pain” and placing it in the proper category. The reason why the brain cannot feel anything
is simpleit has no pain receptors. And the pain in your head, for example, doesn’t
come from the brain itself. It probably comes from the membranes around
the brain. So, being that our brain is pain-free…if
you could touch it, you just wouldn’t feel anything! And, umm…I wouldn’t recommend trying this
at home. Number 1: The Liver Refuses to Go! Our liver is simply a magical organ. It’s in charge of a very important task…to
cleanse us from all the bad stuff in our blood. It filters the blood that enters it from the
digestive tract before letting it out to other parts of our body. The liver metabolizes all the medicine we
take, and also detoxifies us. Pretty amazing, right? But what’s even more amazing is the liver’s
ability to regenerate itself. For instance, if something unpleasant happens
to it, such as chemical damage or a surgery that would cause a chunk of it to get removed…it
will simply grow back (IF all the necessary conditions are there). Only 25% percent of the liver’s mass is enough
for it start regenerating, and soon, it will grow back to its “original” size. Now, the liver doesn’t necessarily go back
to its original form, but it does restore its original mass and function, which is absolutely
incredible, since it’s our only organ to do so! Tell us what you think about these incredible
facts in the comments below and, take care!


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