Theodor Schwann
The German biologist Theodor Schwann () is considered a founder of the cell theory. He also discovered pepsin, the first digestive enzyme prepared from animal tissue, and experimented to disprove spontaneous generation.
Theodor Schwann was born at Neuss near Düsseldorf on Dec. 7, At the University of Bonn, which he entered in , he met Johannes Müller, the physiologist, whom he assisted in his experiments. Schwann continued his medical studies at the University of Würzburg and later at the University of Berlin, from which he graduated in His doctoral dissertation dealt with the respiration of the chick embryo.
Contributions to Physiology and Anatomy
At the University of Berlin, Schwann again came into contact with Müller, who convinced him that he should follow a scientific career. Very soon after he began to work under Müller, he had his first success. From extracts which he made of stomach lining, Schwann demonstrated that a factor other than hydrochloric acid was operating in digestion. Two years later, in , he succeeded in isolating the active principle, which he named pepsin.
Between and Schwann undertook a series of experiments designed to settle t
Theodor Schwann
Friedrich Theodor Schwann (7 December in Neuss - 11 January in Cologne) was a Prussian naturalist, physiologist and anatomist, considered one of the founders of cell theory. In addition, fermentations and nerve fibers, in which he described the Schwann sheath, Schwann cell and contributed significantly to histology.
Biography
Theodor Schwann was born in Neuss, near Düsseldorf, on December 7, He met Johannes Müller, a physiologist, whom he helped in his experiments. Schwann continued his medical studies at the University of Wurzburg and later at the University of Berlin, from which he graduated in His doctoral thesis was on the respiration of the chick embryo.
In Schwann was appointed professor of anatomy at the University of Leuven, Belgium, where he remained until , when he accepted a professorship at the University of Liège. He there he remained until his retirement in After leaving the influence of Müller, Schwann's productivity practically ceased: in Belgium he made only one publication on the use of bile. He was an excellent teacher, conscientious, loved and appreciated by his students.
Schwann's work was actually recognized by scientists in other
Theodor Schwann facts for kids
For the American Union Army officer, see Theodore Schwan.
Theodor Schwann (German pronunciation:[ˈteːodoːɐ̯ ˈʃvan]; 7 December – 11 January ) was a German physician and physiologist. His most significant contribution to biology is considered to be the extension of cell theory to animals. Other contributions include the discovery of Schwann cells in the peripheral nervous system, the discovery and study of pepsin, the discovery of the organic nature of yeast, and the invention of the term "metabolism".
Early life and education
Theodor Schwann was born in Neuss on 7 December to Leonard Schwann and Elisabeth Rottels. Leonard Schwann was a goldsmith and later a printer. Theodor Schwann studied at the Dreikönigsgymnasium (also known as the Tricoronatum or Three Kings School), a Jesuit school in Cologne. Schwann was a devout Roman Catholic. In Cologne his religious instructor Wilhelm Smets [de], a priest and novelist, emphasized the individuality of the human soul and the importance of free will.
In , Schwann enrolled at the University of Bonn in the premedical curriculum. He received a bachelor of philosophy in While at Bonn, Schwann met and w
Theodor Schwann
Schwann, Theodor
Born Dec. 7, , in Neuss; died Jan. 14, , in Cologne. German physiologist and histologist; creator of the cell theory (seeCELL THEORY).
After graduating from the medical faculty of the University of Berlin in , Schwann worked under Johannes Müller in the anatomical museum of the University of Berlin from to He was a professor at the universities of Louvain (–47) and Liége (–80) in Belgium.
Schwann conducted research in various fields of biology. He investigated the effects of oxygen on the development of avian eggs and the process of putrefaction and established the involvement of yeast fungi in fermentation. In he discovered the digestive enzyme pepsin. He also studied the microscopic structure of chorda and cartilage in amphibian larvae. Schwann was acquainted with the work of the German botanist M. Schleiden on the function of the nucleus in the plant cell (already fairly well studied by that time) and concluded after comparing Schleiden’s findings with his own that the structure and devel
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