Posterior palatine nerve

The lesser palatine nerves are a group of two nerves (the middle palatine nerve and the posterior palatine nerve) that arise from the maxillary nerve (CN V2). They supply the soft palate, tonsil, and uvula.

The lesser palatine nerves arise just after the foramen rotundum, enter the pterygopalatine fossa, and then leave this fossa through the lesser palatine canals (usually 2 or 3) and to emerge on the posterior part of the bony palate, just behind the pyramidal process of palatine bone.