[Was the discovery of the systemic circulation exclusively due to William Harvey?]

[The Road to Discovery of the Pulmonary Gas Exchange - From the "Phlogiston-" to the "Oxygen Theory"]

The discovery of oxygen and pulmonary gas exchange was a major advancement in our understanding of breathing. For centuries it was believed that the lungs were primarily necessary to cool the heart or to "refine" the blood. Richard Lower (1631-1691) observed that the blood had a different colour before and after passage through the lung. His assumption was that breathing must have been added a special substance to the blood. Georg Ernst Stahl (1660-1734) formulated a fire substance "phlogiston" (phlox = flame) with his phlogiston theory. He postulated that phlogiston is contained in all combustible substances and escapes when burned. John Mayow (1641-1679) recognised that about one fifth of the breathing gas is important for the breathing process. He called the gas "spiritus nitro aerius". Oxygen was first discovered in the early 1770 s by the Swedish-German pharmacist Carl Wilhelm Scheele (1742-1786) and the English chemist Joseph Priestley (1733-1804) - independently of each other. Antoine-Laurent Lavoisier (1743-1794) recognised oxygen as element and for the first time described the oxidation process accurately.

[From the anatomical teaching dissection to tuition at the bedside-A historical appraisal]

Zu allen Zeiten waren die Anatomen bemüht, der Medizin wissenschaftliche Grundlagen zu vermitteln. Der Anatom hat den toten Körper zergliedert, um damit den Lebenden zu dienen. Das Verständnis physiologischer und pathophysiologischer Prozesse setzt die Kenntnis der Anatomie voraus. Im Corpus Hippocraticum findet man keinen sicheren Hinweis auf die Durchführung menschlicher Sektionen. In Alexandria wurde um 300 vor Christus zum ersten Mal Anatomie an der menschlichen Leiche gelehrt. Mehr als 1300 Jahre standen die Anatomie und die Heilkunde dann unter dem Einfluss des Galen von Pergamon (131–201 n. Chr.). Der Italiener Mondino dei Luzzi (1275–1326) war der Erste, der den systematischen Anatomieunterricht unter regelmäßiger Einbeziehung von Lehrsektionen in den Lehrbetrieb in Bologna eingeführt hat. Andreas Vesalius (1514–1564) aus Belgien hat in der Neuzeit die wissenschaftlich fundierte Humananatomie begründet und viele Fehler der von Galen tradierten Ansichten der Anatomie korrigiert. Im 17. und 18. Jahrhundert waren die niederländischen Universitäten, allen voran die Universität in Leiden, führend im Hinblick auf die klinische und praktische Studentenausbildung.

[Historical (cultural) view of the heart and cardiovascular system]

Who discovered the cardiovascular and capillary systems? When students in advanced semesters are asked about historical matters that have decisively influenced the path to present day medicine, as a rule no answer or a false answer is forthcoming. Whoever wants to understand scientific thinking and action, cannot do better than to grapple with the historical and cultural developments in medicine; however, more than any other science the natural sciences and medicine provide evidence that new ways and knowledge must be consistently sought for the benefit of patients. The aim of this article is to make a contribution to remembering how the cardiovascular system was discovered and the cultural and historical importance of the heart. Last but not least, however, the article aims to convey the impression of the huge personal sacrifice, including one's own life, and the stony path which led to the acquisition of this knowledge.