<prompt> Sphenoidal sinus drains into ?Superior meatusInferior meatusMiddle meatusSphenoethmoidal recess  <response>: Ans. is d i.e., Sphenoethmoidal recess Pa of lateral nasal wall Openings Inferior Nasolacrimal duct Middle Frontal sinus, Maxillary sinus, Anterior ethmoidal sinus Superior Posterior ethmoidal sinus Sphenoethmoidal recess Sphenoid sinus 