Sinuses are a system of hollow, air-filled cavities located within the bones of your skull and face. These cavities are lined with mucous membranes and are connected to the nasal passages. There are several pairs of sinuses in the human skull, including: Functions of Sinuses: Sinuses serve several important functions in the body: Common Sinus Issues: Several … [Read more...] about How To Clear Sinus Congestion Naturally?