sinus drainage

Question 1

where do the sphenoid sinuses drain into

Answer 1

spheno-ethmoidal recess which drains into superior meatus

Question 2

where do the posterior ethmoid sinuses drain into

Answer 2

superior meatus

Question 3

where do the maxillary, frontal, middle and anterior ethmoidal recesses drain into

Answer 3

middle meatus

Question 4

where does the nasolacrimal duct drain into

Answer 4

inferior meatus