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DIAPHRAGM-OPENINGS

Anatomy-Thorax

DIAPHRAGM-OPENINGS


T12
1. AORTIC OPENING - at T12, behind the median arcuate ligament. Transmits the aorta, thoracic duct (in the middle), azygous vein to the right.

T10
2. OESOPHAGEAL OPENING - at T10. Transmits the oesophagus, vagal trunks, oesophageal branches of the left gastric a., accompanying veins and lymphatics. Phreno-oesophageal ligament - a sling of muscle fibers arising from the right crus loops around the oesophagus.

T9
3. B/W THE XIPHSTERNAL + COSTAL DIAPHRAGMATIC FIBERS - at T9. Transmits the superior epigastric vessels.

T8
4. VENA CAVAL FORAMEN - at T8, in the central tendon. Transmits the IVC, right phrenic nerve.
5. Left phrenic nerve pierces the muscle of the left dome at T8, anterior to the central tendon.

BEHIND
6. Sympathetic trunk passes behind the medial arcuate ligament.
7. Subcostal neurovascular bundle passes behind the lateral arcuate ligament.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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