Experts point out that the human ass is an evolutionary milestone. How is it different?

As a higher animal, human beings must be quite different from other creatures. If you want to talk about the specific differences, I believe everyone will be different. Some people will say that our brains take up a larger proportion of the body, others will say that we have smooth skin, and we can also use tools and use complex language to communicate. Indeed these differences make us different. But what I want to tell you today is a unique feature of human beings, which is the ass in our body parts.

Experts point out that the human ass is an evolutionary milestone. How is it different?

Human buttocks are a miracle of evolution

As we all know, the most primitive organism on the earth is a single-celled organism. They only exchange materials and excrement through membranes. Later, with the continuous evolution of organisms, about 535 million years ago, a kind of hindmouth vertebrate appeared. This organism has a blastopore structure in the early stage of embryonic development. This hole can be used for both feeding and excretion. One hole is used for multiple purposes. . Later, eating and excretion were "separated", but the muscles and pelvic structure were not perfect at that time, and the pelvic structure was initially formed in the age of the finfish, the ancestor of the four-legged animal. Later, the force became greater and greater, and the pelvic limbs became the current pituitary and three-dimensional structure.

Experts point out that the human ass is an evolutionary milestone. How is it different?

Millions of years ago, human ancestors lived in dense forests like many other creatures. At that time, we humans were still reptiles with limbs and were active in trees all year round. We know that nature's resources are very limited. If we compete with huge lions and tigers, we can imagine that we will be starved to death. Therefore, people know that if they want to survive for a long time, only long-term skills are the kingly way.

Experts point out that the human ass is an evolutionary milestone. How is it different?

Originally, the ancestors of humans and chimpanzees were the same, but about 6 million years ago, we embarked on their own unique evolutionary paths. In order to survive for a long time, people abandon the easy life on the trees and take the initiative to land on the ground. With the evolution, it gradually gained the special function of long-distance running. At the same time, the body has undergone corresponding changes. The feet have been shortened, the shoulders have become more stable, and the muscles of the hips have gradually strengthened. Soon we humans became the most advanced animals on the planet.

Experts point out that the human ass is an evolutionary milestone. How is it different?

Distinctive buttocks

Humans are the only mammals that use their legs to walk upright for a long time. This way has an important impact on the development of our lower limbs and buttocks. Let’s first understand the composition of our hips. From anatomical point of view, our buttocks are composed of hip muscles and surrounding fat. The gluteal muscles are attached to the pelvis, so what determines the shape of our buttocks is the shape of the pelvis. The pelvis has undergone a lot of evolution in the past few million years.

Experts point out that the human ass is an evolutionary milestone. How is it different?

The human pelvis is composed of three parts, including two hip bones and one sacrum. Each hip bone is composed of three bones: ilium, ischia, and pubis. During the growth process, these three bones can be well fused together. For nearly 4 million years, humans have continuously evolved their own ilium shape, slowly forming a ring.

Experts point out that the human ass is an evolutionary milestone. How is it different?

The buttocks are composed of three muscles, namely the gluteus maximus, gluteus medius and gluteus minimus. We compared the muscles of apes and found that the hip muscles of apes are relatively small. Their gluteus medius and gluteus minimus can help their lower limbs play more roles, while the gluteus maximus muscle has not been well exercised. On the contrary, as far as we humans are concerned, the largest muscle in the body is found in the gluteus maximus. Therefore, the difference in the shape and size of the buttocks has caused the difference between us and primates.

Experts point out that the human ass is an evolutionary milestone. How is it different?

How to be part of the attraction?

With the improvement of people's living standards, everyone's attention has turned to the pursuit of beauty, so physical exercise has become a fashionable label in the circle of friends. Especially for modern women, everyone is inclined to shape the buttocks. why is that? This starts with our ancestors. In ancient times, men have already expressed concern about the physical characteristics of women. In order to reproduce, women will also develop toward the preferences of men.

Experts point out that the human ass is an evolutionary milestone. How is it different?

According to the investigation of scientists, what is the most attractive part of the opposite sex? At this time, whether male or female, more people choose the hips. We cannot see our buttocks but can see other people, so psychologists point out that any body part that humans cannot see will be covered with a mysterious veil, which makes people feel full of attraction.

Experts point out that the human ass is an evolutionary milestone. How is it different?

As we mentioned earlier, the shape of the pelvis reflects the shape of human hips. The larger the hips, the larger the corresponding pelvis. The larger the pelvis, the more conducive to women's production. However, humans changed the shape of the pelvis in the process of walking upright, which gradually made the birth canal of women become narrower, which produced a certain hindrance in the survival and reproduction of women. This is also the disadvantage of walking upright.