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In 1805 Lorenz Oken made several statements that together make up the cell theory. Here are the four parts of the cell theory: All living things are made of cells. Cells are alike in structure and function. Cells need information in order to survive.
- Johannes Peter Müller
- Theodor Schwann
- Carl Rokitansky
- Rudolf Virchow
Johannes Peter Müller, who has become one of the most distinguished physiologists of Germany, was born in Koblenz into a shoemaker’s family on July 14, 1801. Educated in the faith of the Catholic Church, he entered a Latin seminary of the Jesuits. At first, Müller wanted to start a life path as a Roman Catholic priest. Nevertheless, he got interest...
Schwann was born in Neuss on the Rhine, a few miles from Cologne. He received an excellent training in mathematics and physics at the Jesuits College and started to study medicine in 1829. Schwann received his MD in 1834 in Berlin and learned anatomy, physiology, and general pathology from Johannes Müller (1801–1858). During these years spent under...
Rokitansky (Fig. 2) was one of the towering figures in the history of pathological anatomy. Karl Freiherr von Rokitansky was born on February 19, 1804, in Königgrätz (today Hradec Králové, Bohemia, Czech Republic) and died on July, 23, 1878, in Vienna, Austria. He studied in Prague and Vienna and started his career in the morgue of the Allgemeine K...
Rudolf Carl Virchow (Fig. 3) was born 1821 in Schivelbein (Pomerania, Prussia; now Świdwin, Poland) and moved up to be one of the most prominent pathologists and physicians of the 19th century. He pioneered the modern concept of diagnostic pathology and created the modern scientific paradigm by its application of cell theory to explain the effects ...
- Roland Sedivy
- roland@sedivy.net
- 2020
A prolific writer, Oken's books were printed and reprinted until the principles of cell theory, established by Theodor Schwann (1801-1882), superceded his work. The strong opinions of romanticism were eventually overridden by the emergence of experimental natural science.
Mar 2, 2018 · This idea stimulated the concept of German philosopher Lorenz Oken (1779–1851) that all organisms are composed of “infusoria” and “Urbläschen” (primordial bubbles) as basic life units; this speculation directly preceded the works of the first empirical cell biologists (Canguilhem 2008; Harris 2000). However, it was only the invention ...
- Juraj Sekeres, Juraj Sekeres, Viktor Zarsky, Viktor Zarsky
- 2018
However, from their research, it was Lorenz Oken (born in 1779 and died in 1851) who wrote one of the main facets of cell theory: that cells and other microscopic elements were the foundation of life.
May 29, 2018 · Oken embraced Schelling’s transcendental philosophy briefly, for example, Schelling’s two seminal works: Ersten Entwurf eines Systems der Naturphilosophie of 1799, and Die Weltseele of 1799–1800, but later, during his Jena years, Oken distanced himself from metaphysical speculations.
Harris points out that it was not until 1805 that the biologist Lorenz Oken had the prescient intuition of the fundamental homology between the ‘little animals’ of Leeuwenhoek and the...
