This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Oesophageal aperture (anatomy)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The oesophageal aperture is the route that the oesophagus takes through the muscular part of the diaphragm. It is characterised by:

  • in inspiration, usually sited at the level of the T10 vertebra posteriorly and the 7th costal cartilage anteriorly
  • formed by fibres of the right crus
  • relations:
    • anteriorly: fibrous pericardium
    • posteriorly: thoracic aorta
    • right: inferior vena cava
  • the oesophagus is firmly attached to, and enters obliquely through, the oesophageal hiatus; these factors aid in maintaining the competence of the 'anatomical sphincter' to prevent reflux
  • other structures traversing the oesophageal aperture include:
    • anterior and posterior vagal trunks
    • ascending oesphageal branch of left gastric artery and veins

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page