1. The boundaries of the piriform aperture of the nasal cavity include (i) zygomatic bones. (ii)…

1. The boundaries of the piriform aperture of the nasal cavity include (i) zygomatic bones. (ii) maxillary bones. (iii) frontal bones. (iv) nasal bones. 2. Opening into hiatus semilunaris are the (i) posterior ethmoidal sinus. (ii) maxillary sinus. (iii) sphenoidal sinus. (iv) frontal sinus. 3. The lacrimal gland (i) is situated antero-laterally near the roof of the orbit. (ii) projects into the upper eyeUd. (iii) receives both sympathetic and parasympathetic iimervation. (iv) receives secreto-motor fibres from cranial nerve v n .