title: Eustachian
text: # Eustachian
  
  Eustachian, meaning "discovered by, described by or attributed to Eustachi" (Latin name Eustachius) may refer to:
  
  ## Anatomy
  
  * Eustachian tube, an anatomical passage that links the ears to the sinuses
  * Eustachian valve, a valve of the heart
  
  ## Medicine
  
  * Eustachian catheter, a medical instrument which became obsolete after the invention of politzerization.
  