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The following
drawings provide you with a basic understanding of
sinus anatomy: There are four sets
of sinuses: maxillary, ethmoid, frontal and
sphenoid sinuses. We will examine most of them in
the following drawings. The three
overlapping flaps of tissue, called turbinates
(inferior - IT, middle - T, and superior - ST )
protect the openings of the sinuses, and allow
humidification, filtration and warming of air. The
frontal (F) sinus is seen in this view, which is
not usually involved to any great extent in
sinusitis. The sphenoid sinus (SS) is also seen in
this view, and is sometimes involved in sinusitis.
The sphenoid sinus drains into the sphenoethmoidal
recess (SR). |
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