Caspar Friedrich Wolff
You can help expand this article with text translated from the corresponding article in German. (March 2023) Click [show] for important translation instructions.
|
This article includes a improve this article by introducing more precise citations. (April 2014) ) |
Caspar Friedrich Wolff | |
---|---|
University of Halle | |
Known for | gynécologue |
Scientific career | |
Fields | gynécologue |
Signature | |
embryologist who is widely regarded as one of the pioneers of modern embryology.
LifeWolff was born in preformation), that is in the human a homunculus was already sitting in the sperm. His views were not well received. Albrecht von Haller was a powerful antagonist. During the Seven Years' War, Wolff was required to practice as a field doctor in the Prussian Army. Thereafter he had difficulty entering academic life. Finally, in 1767, with help of the mathematician Leonhard Euler he obtained the chairmanship of anatomy at the St.Petersburg Academy of Sciences (now Russian Academy of Sciences). He died in Saint Petersburg .
ResearchWolff's research covered embryology, anatomy, and dissertation "Theoria Generationis" after observing them in his studies on chick embryos. According to Locy, since he assumed a total lack of organization in the beginning, he was obliged to make development "miraculous" through the action on the egg of a hyperphysical agent; from a total lack of organization, he conceived of its being lifted to the highly organized product through the action of a "vis essentialis corporis." In 1768–1769, he published his best work in embryology on the development of the intestine; of which Baer said, "It is the greatest masterpiece of scientific observation which we possess." Again, according to Locy, while Wolff's investigations for "Theoria Generationis" did not reach the level of Marcello Malpighi’s, those of the paper of 1768 surpassed them and held the position of the best piece of embryological work up to that of Heinz Christian Pander and Karl Ernst von Baer .
Wolff’s "De Formatione Intestinorum" rather than his "Theoria Generationis" embodies his greatest contribution to embryology; in it he foreshadows the idea of germ layers in the embryo, which, under Pander and von Baer, became the fundamental conception in structural embryology—he laid the foundation for the germ layer theory. Wolff foreshadowed the germ layer theory by showing that the material out of which the embryo is constructed is, in an early stage of development, arranged in the form of leaf-like layers. Locy recognizes Wolff as the foremost investigator in embryology before von Baer. Wolff contended that the organs of animals make their appearance gradually and that he could actually follow their successive stages of formation.(Dye) EponymsWolff's eponyms are:
References
|