Sinus of Morgagni is between:
Sinus of Morgagni is a gap between the base of skull and the upper concave border of superior constrictor muscle.
Structures passing through that are: Auditory tube, levator palati muscle, ascending palatine artery and palatine branch of the ascending pharyngeal artery.
Middle constrictor and inferior constrictor
Middle constrictor and superior constrictor
Superior constrictor and skull
None of the above