Medicine:Sinus ostium

From HandWiki
Sinus ostium
Details
Identifiers
LatinSinus ostium (plural: sinus ostia)
Anatomical terminology

A sinus ostium is the opening that connects a sinus to the nasal cavity itself. It is a tight area that tends to have a higher percentage of cilia than the surrounding mucosa.

If the sinus ostium is blocked this will cause an accumulation of fluid in the sinus.