Why birth in ancient times were much easier?
Childbirth - a very happy and at the same time an extremely painful process for mothers, which can last for dozens of hours. Some women compare with the pain of childbirth Quitting all the bones of the pelvis without anesthesia, but almost every one of them subsequently recognized that stand the pain was worth it to see her child. Meanwhile, scientists are confident that our ancestors have not experienced this level of pain and easy to give birth in a couple of hours. To find out why ancient people it was easier to give birth, the researchers led by anthropologist Natalie Lauditsiny tried to reproduce the process of giving birth on the computer.
Australopithecus Lucy lived 3, 5 million years ago and belonged to Australopithecus afarensis mean
In truth, they knew from the outset the possible cause of lung delivery. According to them, the woman began to experience pain in a hell of a time when our species has mastered bipedalism. Vertical walking so changed the shape of our pelvis that the birth canal of women began to narrow. The size of the baby's head has not changed and to squeeze through the birth canal it is necessary to turn over several times in the womb.
Why hurt to give birth?
To find out how much easier it was to give birth to our ancestors, the scientists created a model of the pelvic bones of ancient people of species Australopithecus sediba, Australopithecus afarensis and Homo erectus, and modern female chimpanzees and humans. They also create a circular pattern, shape and size of a newborn baby resembles the head. By combining these models, they compared how easily the baby's head passes through the birth canal.
After the birth canal Australopithecus sediba child's head is easier than that of modern women
It turned out that the birth canal 1 lived 95 million years ago, representatives of the species Australopithecus sediba was wide enough to baby without any problems passing through the channel. That is, the delivery process passed with a minimum of pain and within a few hours or even minutes. Modern women, in turn, the birth canal was more narrow, which may explain the hellish pain during childbirth.
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The birth and evolution of
One would have thought that the pain of childbirth was enhanced in the course of evolution, but it is not. Yes, ancient people Australopithecus sediba species give birth quickly and easily, but their ancestors - lived in a million years before Australopithecus afarensis - experienced pain during childbirth. In this connection, the scientists it is difficult to say at what point the evolution of labor became so painful.
This is interesting: What if women were stronger than men?
To give to this question is the exact answer, the scientists intend to study with a larger number of models of the pelvic bones of our ancestors. Even if a new experiment does not give a clear picture of the evolution of pain during childbirth, researchers will look for other causes of pain - possibly in addition to the pelvic shape in this case involved, and other factors.
Generally, with the passage of time, people have changed not only the pelvic bones, but also the face. The reason for this served as bipedalism, and other factors such as climatic conditions and ways of eating. About how it changed our face for millions of years, can be found in our material. Take your time and watch the video in this article - it is amazing!