What are the rudiments of man and why they still need

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2020-03-14 10:20:20

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What are the rudiments of man and why they still need

Have You ever wondered why your body there are certain organs? If the heart, kidneys and liver all the same it is clear, then what is the function of, for example, the Appendix? Why do we need muscles in your ears? And about wisdom teeth and do not need reminding — many people sooner or later suffer with them. In fact, the human body has many parts, which in the current situation is simply not needed. Through evolution they have lost their value, although in the past people could not live without them. Such parts are called rudiments.

What is the vestiges

Why is it still present in the human body, if in fact these bodies no longer need? While this is not in any way affect: vestigial body parts appear when the baby is still in the womb. Don't confuse them with temporary bodies, which are only in embryos (e.g., umbilical cord) and fade after their birth. In fact vestiges prove the relationship between the current generation of humanity and its ancestors; moreover, it is clear evidence that in ancient times people looked quite different, as it is now.

The faster is evolution, the more rudimentary organs appears in person. However, according to scientists, in the future there will come a time when the rudiments in the body is not at all — they just all disappear in the process of evolution. Of course, it will happen very soon, and your grandchildren, great-grandchildren and their descendants still remain, such parts of the body. Yes, some other parts of our body have played an important role in the survival of our very distant ancestors, but also eventually become useless. Some of them can even be removed surgically, and their absence will not reduce the quality of human life.

7 millionof of years of evolution many important organs become vestiges

Currently, there are tacitly approved list of human body parts, which through evolution has lost its function, but preserved in the form of rudiments. In this article we will look at each of them: after all, the same Appendix probably sooner, why it was needed?

the Rudiments and atavism what is the difference

Vestigial organs is often confused with other parts of the body — atavism.

the
    the
  • Rudiments — at its core are the extra bodies, but their presence is not in any deviation, as they are present in most, and were our closest ancestors.
  • the
  • Fossils — represent the bodies of distant ancestors, but, on the contrary, were absent in the next. They usually appear due to a genetic failure, as in any human DNA genes responsible for the appearance of atavism.

To Understand the differences between the vestiges and atavisms are the easiest on the example of coccyx: it is the base of the spine, which fused several vertebrae, is recognized as a vestigial organ. The coccyx was present as people in the 19th and 20th century, and their predecessors and preserved in our time. But few people know that a coccyx — a vestige of the tail; that is, it is just that part of the body, which suggests that once upon a time people really had tails.

But the tail is considered a throwback, a deviation from the structure of the body of modern man. Although their number is small, still born babies with small tails or just ledges in the coccyx area filled with fatty tissue. Sometimes the tail may even be the vertebrae, and its owner is able to move them, however in modern medical practice, such cases almost never occur.

Yes, creatures with fossils often look strange and scary, so many people prefer not to dwell on his disabilities, because the fear of condemnation from the majority. In fact, it is atavism, not rudiments, make it clear, as were our ancestors, and what kind of life they led on Earth.

Some babies are still born with tails, but they quickly operate

Vestigial organs

There is No single list of vestigial organs, however, scientists in our time have come to conclusions, what parts of the body can be accurately attributed to the rudiments.

the Rudiments of man:

the
    the
  • Coccyx
  • the
  • the Appendix
  • the
  • wisdom Tooth
  • the
  • the Muscles in the ears
  • the
  • Nipples (men)
  • the
  • Third eyelid
  • Goose bumps the

  • the Muscles in the hands

These are classic examples of vestiges in humans. What they said, it's not just us in the body had extra bodies?

the

Coccyx

As we said earlier, the coccyx — a clear proof that once upon a time all the people went with tails. Thus in the womb the baby, he even appears still, but by the time of birth disappears completely, leaving behind fused vertebrae in the coccyx. If the tail is not lost due to violations of the DNA, it is already possible to speak about the presence in the newborn of a throwback.

once here grew a tail.

In accordance with the theory of evolution our ancestors indeed had tails, but with the advent of the Homo sapiens (Homo Sapiens) skill of walking upright, the need for the tail disappeared. Yes, it was a long time ago, but the tailbone is preserved even in the 21st century. Babies with tails are born very rarely, but if it happens, once the organ is removed surgically shortly after birth.

the

Appendix

the Appendix lost its function through evolution

Many people wonder if Appendix so easily removed, why do we need it? In fact, once this body has taken an active part in the human digestive system. It processed coarse, and plant foods rich in fiber. Moreover, in animals the Appendix is still performing the same function, but in the case of men, it is almost useless.

Here the role played by the much more diverse human nutrition. Now we do not need too long and complicated tract. Among some scientists it is believed that the Appendix still not completely useless — there are some useful intestinal bacteria, but they have not yet figured out until the end – was it always in its function, or the authority it acquired.

the

the wisdom Tooth

Compared to our ancestors, modern man is much smaller jaw. Therefore, the so-called "eights", or wisdom teeth, just not enough space. Previously, these teeth allow to chew our ancestors hard and solid foods. Modern man consumes processed in any way the products, so the need for these teeth is missing.

many people, wisdom teeth will never cyprostat, but that doesn't mean that they are not

Wisdom Teeth (aka molars) helped our ancestors to grind solid food but now we eat mostly soft foods. Yes, and the process of mastication has changed and shifted closer to the fangs. Interestingly, wisdom teeth are not all — their presence depends on genetic predisposition of a particular person.

the

Movement ears

Our ancestors were able to move their ears at an angle of 30 degrees

Ever thought about why we all need the opportunity to move your ears? Animals use ear muscles to determine danger or when catching prey. People also used to use the movement of ears to guide them in the direction of the sound to better hear. Some people still can slightly move my ears, but it does not compare with what was capable of our ancestors. They could turn the ears at an angle of 30 degrees.

Now ear muscles are out of date, because people in the course of evolution got a very plastic neck. And now, to better hear sounds in one or the other side, we just turn the head, not the ears separately. But who knows, maybe it would be convenient? Tell us what you think about it .

the

Nipples in men

The presence of the nipple in women is caused by the need to produce milk for infant food. Why nipples men — do they, too, had once breast fed? In fact, many mammals, a male in extreme situations can lactating — to allocate the milk. So, in Central Africa there's a tribe of pygmies, where men breastfeed, if women go in search of food. Scientists believe that this ability had previously been developed in all men, but most through evolution it has lost.

once the man could feed the baby is not the only way

However, it is proved that all the men in the course of a lifetime, a small quantity of prolactin — the hormone which promotes the secretion of milk. For example, prolactin is released after orgasm, and perhaps it is associated with a feeling of satisfaction and relaxation after sex.

the

Third eyelid

Third eyelid was an additional eye protection

Third eyelid — a small piece of skin in the corner of the eye. Actually, it's quite useful on that people previously used to protect their eyes. Many animals (reptiles, birds, mammals) still make use of the third century.

Scientists do not know why people have only a piece of the third century. But in fact they are rare among primates, so we must have lost them long ago.

the

Goose skin

Imagine if you hair is 10 times thicker?

You've probably noticed how when listening to a favorite track or watching a terrible film on the skin appear "creepy" or goose skin. In fact, it can manifest in different situations — during the cold weather, strong satisfaction or depression. But why is it necessary?

Because our ancestors had a more dense hair, this fiber performed a very useful function. In case of danger, there were goose bumps, hair rose strongly above the skin, and it made our ancestors much more massive, which in turn could frighten the enemy. In addition, as in the case of our ancestors, these fibers help in the defense. For example, porcupines definitely derive from them benefit. And many animals use these muscles to keep more heat.

the

muscle Excess

Palmar muscle have many

Did You know that in our organism there are so-called "extra muscles"? One of the long Palmar muscle. How to understand that you have it? Put your hand on a flatthe surface with the palm up and roll the thumb with the little finger, and then slightly lift your fingers. I see a bunch of speakers just below the wrist? This bunch is called long Palmar muscle.

The

Previously, this muscle was used by our ancestors for climbing trees, it helped to strengthen the grip when you jump, for example, from one tree to another. But now, when we all use the staircases and elevators, it has lost its relevance. Actually it happened about 3 million years ago when human ancestors began to walk on two legs.

the Rudiments in animals

Contrary to popular belief, and vestiges, and atavisms are found not only in humans but also animals. For example, the moles still have eyes, although they do not need them. To rudimentary organs include acute and growths around the beak of a bird: many millions of years ago all birds had teeth (remember the days of the dinosaurs), and these smaller processes are the rudiments of those teeth.

Fossils are also found in animals — for instance, horses that sometimes do not go on a single finger (nail of which turned into a hoof), but multiple. In ancient times the presence of the horse a few "fingers" was the norm.

Fossils are found and animals

How to get rid of the vestiges?

Of Course, you can remove the Appendix, wisdom teeth and even an extra muscle in the ears, but to get rid of the coccyx without consequences will not work. Perhaps in the future the person will not rudiments, but it will happen not sooner than in hundreds of thousands, if not millions of years. But who knows whether by that time ? What will be the future from the DNA of modern man?

Radical human life extension is on the horizon. We all get regenerative powers, which previously belonged to only a handful of animals and superheroes from comic books. And then, perhaps, get rid of vestiges and atavisms.

we Have much more in common with our ancestors than it looks

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