|
Opening |
Vertebra level |
Content |
|
|
Vena caval opening (Most anterior present) |
at T8 level (body) |
• IVC (Inferior vena cava) • Right phrenic nerve |
In central tendon (right side) |
|
Oesophageal opening |
at T10 level (body) |
(Mnemonic: OO0) • Oesophagus • Oesophageal branch of left gastric artery • 10: Vagus nerve (Rt. & Lt.)
Mnemonic: O = 10 (vagus) |
In muscular part (right crus) |
|
Aortic opening |
at T12 level (lower border of body) |
from left to right- • Aorta • Thoracic duct • Azygous vein |
Behind diaphragm (between crura) |
|
Sternocostal triangle - Foramen of Morgagni (right side) - Larrey space (left side) |
Near xiphoid |
• Internal thoracic artery & vein (turning into superior epigastric artery & vein) |
Between costal & sternal attachment of diaphragm |
|
Small muscular openings |
Variable |
- Sympathetic trunks - Splanchnic nerves (Greater, lesser, least) - Hemiazygos vein (Variable) |
Through crura or posterior diaphragm |
