The Diaphragm

The diaphragm is an essential embryonic structure that forms from four main elements: the septum transversum, the pleuroperitoneal membranes, the paraaxial mesoblast of the trunk wall, and the esophageal mesenchyme. This process of embryo flexion plays a crucial role not only in the organization of joints but also in the delimitation of the embryo. The dynamics of this movement are often misinterpreted; in fact, it is not a descent of the heart, but an elevation of the surrounding body structures.

The pericardium and the diaphragm form an inseparable functional unit, where the pericardium supports cardiac rhythmicity and actively participates in cardiac function. The establishment of the diaphragm is influenced by the growth of surrounding structures, particularly the posterior part of the embryo which creates an absorption space attracting the lungs. Mesenchymal cells, integrated into this process, contribute to the formation of pericardial tissue and diaphragmatic orifices. The esophageal junction, in particular, is a critical area for digestive health, often linked to esophageal disorders and requiring special attention in osteopathic practices.