👉 The sin fluid, also known as the sinuses, are a group of interconnected air-filled cavities within the skull that drain into the nasal passages. These sinuses, including the maxillary, frontal, ethmoid, and sphenoid sinuses, are lined with mucous membranes that produce mucus, which helps trap dust, bacteria, and other particles. The fluid produced by these membranes, called sin fluid, plays a crucial role in maintaining the health of the sinus lining and facilitating the process of mucus drainage. When this fluid becomes thickened or stagnant, it can lead to sinus infections and other issues, highlighting the importance of proper sinus health.
