Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
SlideshowReport

Paranasal sinuses are part of the upper respiratory system.

Description
From here, infections can spread via the nasopharynx to the middle ear or bronchi. Note locations of laryngitis, pharyngitis, sinusitis, and tonsillitis.
Related Images
Add Comment
Explore
Post your homework questions and get free online help from our incredible volunteers
  971 People Browsing
Your Opinion
Do you believe in global warming?
Votes: 370

Previous poll results: Where do you get your textbooks?