The Inferior posterior nasal branches of greater palatine nerve are small nerves which largely supply the posterior aspect of the
nasal cavity
The nasal cavity is a large, air-filled space above and behind the human nose, nose in the middle of the face. The nasal septum divides the cavity into two cavities, also known as fossae. Each cavity is the continuation of one of the two nostrils. ...
. They pass through small foramina in the palatine canal to supply the lateral walls of the nasal cavity - including the superior, middle, and inferior nasal concha. These nerves run alongside the lateral posterior nasal arteries, which are branches of the sphenopalatine artery.
Note that superior posterior branches of the greater palatine nerve are responsible for innervating the posterosuperior aspect of the lateral nasal cavity.
Nose
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