Sphenoidal sinus drains into ?: (A) Superior meatus, (B) Inferior meatus, (C) Middle meatus, (D) Sphenoethmoidal recess
Answer is D. 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