vena caval foramen
The vena caval foramen is one of the three major apertures in the diaphragm. It is the highest of the three and situated at the level of T8-9. It is quadrilateral and placed at the junction of the right and middle leaflets of the central tendon.
It transmits several structures between the thoracic and abdominal cavities.
- inferior vena cava
- branches of the right phrenic nerve
- note: left phrenic nerve directly pierces the dome of the left hemidiaphragm