Question

Membranous partition between pericardial cavity and pleuropericardial cavity is

• A. Septum transversum
• B. Mediastinal septum
• C. Diaphragm
• D. None of the above

Answer 1

Answer: (B)

Mediastinal septum

Septum transversum is found in the embryo which later helps in formation of diaphragm and membrane of the liver.

The diaphragm is the muscular membrane separating the thoracic cavity from the abdominal cavity.

The plueropericardial membranes and the pericardial membranes are fused into the mediastinal septum which hence separates both the cavities.

So the correct answer is 'Mediastinal septum'.