Digestion theory
The digestion doctrine or digestion doctrine of Galen is a notion in connection with the concept of humoral pathology that was widespread until the early modern period and has since become obsolete . Galen distinguishes three stages of digestion ( pepsis ) based on Hippocratic medicine :
- the first digestion ("cooking process") in the stomach . In the stomach, a kind of chyme, the “chylus” (Greek chylos ), arises from the food . Here the “pure” chyle would turn into yellow and black bile. Inferior components of the chyle would be excreted as black bile via the intestine as a digestive waste product with the feces; the pure parts ended up in the liver.
- the second digestion in the liver (whereby the chyme is converted to blood, urine is formed as residue and excreted through the urinary tract)
- the third digestion in the organs , whereby the blood is completely used up and the excess is excreted as a waste product with the sweat that is produced.
According to the digestion theory, a warm, humid "wind" or vapor created from blood rises from the stomach through the carotid arteries and thus reaches the brain.
See also
literature
- Wolfgang U. Eckart : History of medicine . Springer Verlag, Berlin a. a. 1990, ISBN 3-540-52845-8 , p. 62.
- Jutta Kollesch , Diethard Nickel : Ancient healing art. Selected texts from the medical writings of the Greeks and Romans. Philipp Reclam jun., Leipzig 1979 (= Reclams Universal Library. Volume 771); 6th edition ibid 1989, ISBN 3-379-00411-1 , pp. 20 f. (on digestive physiology in the Corpus Hippocraticum) and 63 f. ( Anonymus Londinensis , Sp. XXIV 19-XXV 23 ).
Individual evidence
- ↑ Gundolf Keil : The 'Cirurgia' Peters von Ulm. Investigations into a memorial of old German specialist prose with a critical edition of the text (= research on the history of the city of Ulm. Volume 2). Stadtarchiv, Ulm 1961 (also philosophical dissertation Heidelberg 1960), p. 488.
- ↑ Jürgen Martin: The 'Ulmer Wundarznei'. Introduction - Text - Glossary on a monument to German specialist prose from the 15th century. Königshausen & Neumann, Würzburg 1991 (= Würzburg medical historical research. Volume 52), ISBN 3-88479-801-4 (also medical dissertation Würzburg 1990), p. 192 ( Wint ).