The following open in the middle meatus of nose EXCEPT:
Ans. d (Posterior ethmoidal sinus). (Ref. BD Chaurasia, Human Anatomy- Vol. II, 3rd ed., 197)MeatusStructures opening in itFeatures of middle meatus of noseEthmoidal bullaHiatus semilunarisInfundibulumOpening of frontal air sinusOpening of maxillary air sinusOpening of middle ethmoidal air sinusSuperior meatusOpening of posterior ethmoidal air sinusInferior meatusOpening of naso-lacrimal duct guarded by Hasner's valve.
Maxillary sinus
Anterior ethmoidal sinus
Middle ethmoidal sinus
Posterior ethmoidal sinus
Nose