sphenoethmoidal recess

The sphenoethmoidal recess is a small space in the nasal cavity.

Each sinus opens into the roof of the nasal cavity via apertures on the posterior wall of the sphenoethmoidal recess directly above the choana.

The sphenoidal sinus opens into a recess, the sphenoethmoidal recess, which is placed superior to and posterior to the superior concha.