Ostiomeatal complex parts (mnemonic)

A useful mnemonic to remember the five parts of the ostiomeatal complex is:

  • HI EMU

Mnemonic

  • H: hiatus semilunaris
  • I: infundibulum
  • E: ethmoidal bulla
  • M: maxillary ostium
  • U: uncinate process

Emus have large beaks, and hence could have large ostiomeatal complexes (if they had paranasal sinuses).

Share article

Article information

rID: 44378
System: Head & Neck
Sections: Mnemonics, Anatomy
Synonyms or Alternate Spellings:
  • parts of the osteomeatal unit (mnemonic)

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.