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There are four pairs of sinuses in our head. Sinuses are hollow, air-filled and interconnected spaces located around the nose in the skull. All these spaces or cavities open into the nose through tiny openings called ostia. As both sinuses and nose are lined with the same soft tissue called mucosa, any infection that affects one affects the other. When this mucosa gets infected, the resulting condition is called sinusitis. It is also called rhino-sinusitis (\u2018rhino\u2019 is a medical term for the nose).<\/p>\n
The four pairs of sinuses are as follows: \u2013<\/p>\n
The\u00a0accepted functions of sinuses include,\u00a0relative weight reduction of the front part of the skull (sinuses are hollow and filled with air), air-conditioning, and humidification of air that\u2019s breathed in, giving added resonance to voice and lending mechanical rigidity.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n