The greater palatine canal
(or pterygopalatine canal
) is a passage in the skull
that transmits the greater palatine artery
, vein, and nerve
between the pterygopalatine fossa
and the oral cavity
The greater palatine canal starts on the inferior aspect of the pterygopalatine fossa
. It goes through the sphenoid
and palatine bones
to reach the palate, ending at the greater palatine foramen. From this canal, accessory canals branch off; these are known as the lesser palatine canals
The canal is formed by a vertical groove on the posterior part of the maxillary surface of the palatine bone; it is converted into a canal by articulation with the maxilla.
The canal transmits the descending palatine vessels, and the anterior palatine nerve.