Sunday, March 19, 2017

the following structures open into the middel meatus



the following structures open into the middel meatus:
a- nasolacrimal duct
b- posteror ethmoidal sinus
c- maxillary sinus
d- sphenoid sinus
e- anterior ethmoidal sinus
1- a,b &d
2- a & b
***3- c & e
4- all of the above