Did you know that the humans have been developing for the past 200,000 years, and many tiny changes have led to our current form? The answer is YES and this actually means that we (ALL) are a product of adaptation, evolution, and natural selection. Our ancestors may have looked similar in appearance to us. But, you should also know that many physical and anatomical things are different these days. And, according to the experts, proof of this can be found in the vestigial structures scattered throughout our bodies. Do you know what are vestigial structures? They’re genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but having been retained during the process of evolution. And, the best known examples of vestigial structures include the appendix, goosebumps, wisdom teeth, tonsils, male nipples, and the outer ear.
- Tendon on your wrist
Put your hand on the table with palms upwards. Connect your thumb and little finger together and raise your fist a little. So, what happens next – well, in some people the tendons will be clearly visible, while in others will be less visible. This is due to the palmaris longus tendon muscle which is located between the upper arm and wrist. Although this muscle takes part in the movement of the wrist, in the modern age is no longer needed and therefore it is noticeable in just 13% of today`s human population. Note: the experts say that lack of this muscle will not affect the strength and has no adverse effects, except visually.
- Pink point in the corner of your eye
Ladies and gentlemen, have you noticed a pink point in the corner of you eyes? Generally speaking, almost all people have this point which nowadays has no function, but it is characteristic of the so-called – the third eyelid. The experts say that this eyelid is usually found in reptiles which serves as a protection of the eye when their eyes are closed.
- Wiggling ears
We all know someone who wiggles his/her ears – just for fun. But, did you know that the wiggling muscles in the ears had a very important role in the past? Wiggling your ears can improve the hearing and enable people to locate sounds in the environment and recognize danger. And, this “method” is common in cats.
- Wisdom tooth
Some people have wisdom teeth and some people don`t. WHY? We can answer that question for you – a long time ago, the humans fed in grass roots. And today, our food became softer and lighter, and our jaw became smaller and the wisdom teeth lost their function. Most monkeys and primates have no wisdom teeth, while gorillas which are vegetarians still have them.
- Getting goosebumps
Goosebumps usually appear when people are cold or when they experience powerful emotions. So, when the hair is up, it stores more heat, and when in danger, it served to make people bigger and more dangerous for potential attackers. This is visible in domestic cats and other animals.
Sources and References included in this article – Connect Your Thumb with The Little Finger, Healthy Life Tricks