What are the sinuses?

They are air filled pockets within the skull and face bones and they are lined with mucous membrane. They open into the nose or mouth, chiefly, and they can quite easily get irritated or infected, which can be painful.

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होली के त्योहार से जुड़ी कुछ बाल-कहानियाँ

होली वाला बर्थडे: मंजरी शुक्ला ऐसे मनी होली: मंजरी शुक्ला होली: मंजरी शुक्ला मुस्कान की …

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