The contemporary medical practice is enrolled in the rigid principles of a technological order. In order that the development and organization of the technological order would take place, and also material and objetively made concrete, it was essential that their products represented a materialization of a certain concept of human body and of health. This paper intends to be an introductory study of certain conditions of possibility for the construction of this technological order in the area of health. Although this thought includes, necessarily, a historical dimension, we do not intend here a factual reconstitution that considers dates and personalities. Its immediate goal will be to focus a moment of rupture, in which the introduction of the new concept of motion generated a new conception of human physiology. So, more important than one specific theory - of the blood circulation - or its effective results, is to understand the process of arising and/or changing of the concepts that allowed it to exist originally.
medical technology; physiology; blood circulation