though the salpingopharyngeus muscle ( spm ) seemed to be the muscle which could open the eustachian tube maximally , splitting of the soft palate and consequent interference with the tensor veli palatini muscle ( tvpm ) and the levator veli palatini muscle ( lvpm ) -- but obviously not with the salpingopharyngeus muscle ( spm ) -- caused the effusion material to be produced in the middle ear cavity .
C0015183
eustachian tube
C0013455
middle ear