The mnemonic
V-VII-IX-X
What each word stands for
- VTrigeminal, from teeth and temporomandibular joint
- VIIFacial, from the face and ear canal
- IXGlossopharyngeal, from tonsil and tongue base
- XVagus, from larynx and hypopharynx
Why it matters clinically
An adult with ear pain and a normal ear needs the throat examined.
Where it stops being reliable
Does not name the individual branches.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.