To understand what is a sinus tract, we need to go a bit into the graphic description of the structure of our skull. Sinuses are cavities in our skull. They are not very large but very significant. In fact the sinus tracts are as narrow as the lead of a pencil is. They basically act as connectors. Though themselves they do not perform much physiological function as such but their well being is very essential for our survival and good health.


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