See evolving evidence on your own body

No need to look far, you can see firsthand the evolving evidence through natural selection process on your own body.

On the bodies of all of us there exist some seemingly useless parts, such as coccyx, an incredible tiny ligament inside the wrist . But, in fact, they are equal evidence of human evolution from animals, through natural selection.

The following video of Vox mentioned some of the remaining traces of that evolutionary process as well as the explanations of their origins:

The video explains the origin of traces of evolution on the human body.

According to Vox, one of the remaining evolutionary evidence on the human body is a muscle in the arm called palamaris longus . This muscle has completely disappeared in about 10 - 15% of people in the world today. Experts say this muscle deficiency does not weaken a person, as it is only a trace of our ancestors used to forearm to climb. Today, these incompetent people can still hold, gripping like those who own it.

The structure of palamaris longus muscle can also vary between one person and another. It may be the upper ligament and the lower muscle, the middle muscle with a thickening at the top and bottom, two muscle bundles with a ligament in the middle or maybe only a group of ligaments. And sometimes, this muscle is found near the wrist.

The human body still retains traces of evolution.

In a study published in 2014 in the journal BioMed Research International, the researchers found that the palamaris longus muscle is longer in lemur-like primates, which use their arms to climb more. But this muscle is shorter and more likely to dissipate in humans as well as human apes - those who do not use arms for frequent climbing.

Similarly, the plantaris at the feet is used by animals to grasp and manipulate objects with their feet. That's why some humanoid monkeys seem to be able to use their feet as hands. Humans also have this muscle, but now it is so poorly developed that doctors often extract it when tissue is needed to replicate in other parts of the body.

An evolutionary vestige that we inherited from our ancestors is the phenomenon of " goosebumps " or " goosebumps ". When we are cold, the muscles connected to the body hair shrink and make the hairs stand up. This is extremely useful for mammals that have fur covered or birds, as it creates more insulation space, making the " misery " warmer. Their function in human ancestors is to erect body hair, making our ancestors look bigger and chase away predators.

The prickly skin phenomenon can reveal exactly what we are feeling. And in 2014, Korean researchers figured out how to use a sticky sensor on the skin to measure the tiny changes of " snail " on the skin. According to them, these changes can reflect people's moods and can be used to identify everything from enjoying music, advertising online to experiencing room temperature.

Coccyx is the last part of the human spine as well as humanoids and other mammals such as horses. This is what remains from the tail of our ancestors. Over time, people no longer need to tail, but we do not lose the need for tailbone. This part of the bone acts as a support structure for many muscles and assists their owners when they sit down, leaning back.

The fetuses have a tiny piece of tail at about 4 weeks of age, but the tail cells have been programmed to stop growing. At 4 weeks of age, fetus-like fetuses of other mammals are at the same stage. For many other animals, the tail continues to grow, but for humans and humanoid monkeys, tail cells die.

At about 6-12 weeks old, white blood cells break down the tail and the fetus grows into a normal child without tail most of the time in the womb. Some babies are born with a " soft tail ", which does not contain bones and has only blood vessels, muscles and nerves, but this phenomenon is very rare.

Ears are another body part that also shows our evolutionary history. The 3 muscles attached to the outer ear do not make people perform much movement. However, in other mammals, these muscles help their ears move around to see where the sound originates.