Introduction to the Specimen of the Human Specimen Model

Introduction to the Specimen of the Human Specimen Model

In 1859, British biologist C.R. Darwin published the book "Origin of Species", which clarified the development law of biology from low to high, from simple to complex. In 1871, he published the book "The Origin of Man and the Selection of Sex", listing many evidences that human beings evolved from extinct ancient apes. But he failed to recognize the essential differences between humans and animals, and failed to properly explain how ancient apes evolved into humans. F. Engels put forward the scientific theory that labor creates human beings. In 1876, he wrote the article "The role of labor in the process of transformation from ape to man", pointing out that the fundamental reason for human beings to break away from the animal state is labor, the relationship between humans and animals The essential difference is also labor. The article discusses the transformation process from apes to humans: the ancient apes lived in groups in tropical and subtropical forests at first, and later some apes went down to the ground in search of food, and gradually learned to walk upright on two feet, while their forelimbs were freed. Come out, and can use tools such as stones or wooden sticks, and finally develop to make tools by hand. At the same time, the physique, including the brain, has been developed accordingly, and various characteristics of human beings have appeared. Engels called tree-dwelling apes "tree-climbing apes", creatures in the transition from ape to man "man in the making", and man capable of making tools "completely formed". people". With the continuous discovery of fossil materials and the continuous improvement of dating methods, people's understanding of the origin of human beings has also been deepened. Although there are still many problems, the clues to the origin and development of human beings can be roughly delineated.

Introduction

The so-called human specimen is a specimen made from a real human body after a series of chemical treatments. Specimens soaked in formalin in the past were prone to discoloration and deformation, and the preservation time was not long. The current specimens are all plasticizing technology, which was invented by German Gunther von Hegens in the 1970s and introduced in China in 2000. The specimens preserved by plasticization have been dehydrated and degreased. All we see now is muscle tissue, which looks more symmetrical and beautiful. After such a technology, the specimens can be preserved for 500 years.

Plastination is the process of replacing the moisture in organ tissue with a liquid silicone mixture, turning the tissue into a permanent specimen.

Invention history

Plastination was invented by German anatomist Gunther von Hegens.

He's making teaching aids for anatomy...

He was inspired by the work of Renaissance anatomists.

The vast majority of his human specimens are plastinated in China (he is said to employ 200 Chinese workers), a technique that is labor-intensive and time-consuming, only one specimen can be made in a year (his After the patent expired, this technology was improved by American D. Corning, which only took 1/10 of the original time).

Plastination requires first cleaning the corpse (like bathing a living person)

It is then soaked in acetone to remove moisture from the body tissue in preparation for the silicone polymer injection

After full body immersion, the corpse is sent into a full body plasticizer, where the polymer is pressed into the body by reducing the pressure inside so that the acetone turns into a gas and evaporates from the corpse.

Apply catalyst to skin after Z to begin two-day cure

Plastination of a body costs about $50,000.