The oesophagus:

• A. is supported inferiorly by a sling of fibres from the left crus of the diaphragm
• B. has its narrowest part at the opening of the diaphragm
• C. has a blood supply from inferior thyroid arteries, oesophageal branches of aorta and branches of left gastric artery
• D. has no contact with thoracic vertebrae
• E. is crossed on the right by the arch of the aorta and azygous vein