When we go to thorax or abdomen... It's hard to remember their relation... Are there any tips?
What sort of relation? The relation of structures that pass through the diaphragm?
Ok I know one mnemonic for that.
I ate (8) ten eggs at twelve.
I: Inferior vena cava
Eggs: Esophagus (Vagus rhymes with it!)
AT: Azygous vein, Thoracic duct! Twelve: T12
So to summarize:
IVC - T8
Esophagus, vagus - T10
Azygous, thoracic duct - T12
Hope this helps!