What is septum transversum?

The septum transversum is a thick, membranous structure that separates the thoracic and abdominal cavities during the early stages of embryonic development. It plays a crucial role in the formation of various organs and structures within the developing body.

The septum transversum is involved in the development of the diaphragm, the primary muscle responsible for respiration. It also gives rise to the central tendon of the diaphragm, which helps anchor the diaphragm muscle and provide support for the thoracic and abdominal organs.

In addition to its role in diaphragm development, the septum transversum also contributes to the formation of the liver, heart, and other organs within the abdominal cavity. It helps separate these organs from the thoracic cavity and ensures that each organ develops in its appropriate location.

Overall, the septum transversum is a crucial structure in embryonic development, playing a key role in the formation of the diaphragm and other important organs within the body.