What are the layers of the mucous blanket in the paranasal sinus?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Sinonasal secretions play an important role in the pathophysiology of rhinosinusitis. The mucous blanket that lines the paranasal sinuses contains mucoglycoproteins, immunoglobulins, and inflammatory cells. It consists of 2 layers: (1) an inner serous layer (ie, sol phase) in which cilia recover from their active beat and (2) an outer, more viscous layer (ie, gel phase), which is transported by the ciliary beat. Proper balance between the inner sol phase and outer gel phase is of critical importance for normal mucociliary clearance.


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