Most superior sinus in the face is:: (A) Frontal sinus, (B) Ethmoid sinus, (C) Maxillary sinus, (D) Sphenoid sinus
Answer is A. (a) Frontal sinus(Ref. Scott Brown, 6th ed., 4/3/2)Most superior sinus is the frontal sinus followed by ethmoid, sphenoid and maxillary sinuses.