<prompt> Spenoid sinus drains into which of the following -Spheno-ethmoidal recessMiddle meatusSuperior meatusHiatus semilunaris  <response>: Ans. is a i.e., Spheno-ethmoidal recess Part of lateral nasal wallOpeningsInferiorNasolacrimal ductMiddleFrontal sinus, Maxillary sinus. Anterior ethmoidal sinusSuperiorPosterior ethmoidal sinusSphenoethmoidal recessSphenoid sinus 