Editing Diaphragm (section)

== '''Embryology:''' ==

* '''Septum     transversum''' is     an involved structure which is formed from mesoderm, and acts as a     framework for diaphragmatic development. Forms most of the central tendon.
* '''Pleuroperitoneal     membranes'''     contribute by completely covering the septum transversum and therefore     closing connection between thoracic and abdominal parts of the coelom.
* The septum transversum is     also invaded by '''muscle cells''' derived from the third, fourth and fifth cervical     myotomes - meaning they bring the motor supply from the phrenic nerves     with them
* '''Oesophageal     mesentery''' also     contributes to the development of the diaphragm by forming the crura