What duct connects the maxillary sinus to the nasal cavity?

The duct that connects the maxillary sinus to the nasal cavity is known as the maxillary ostium. This structure is crucial for the drainage of mucus produced in the maxillary sinus into the nasal cavity, facilitating the normal function of the sinus. The maxillary ostium is typically located high on the inner wall of the maxillary sinus, which can make drainage somewhat challenging, especially in cases of sinus inflammation or infection. By providing this connection, the maxillary ostium ensures proper ventilation and drainage, which are vital for maintaining sinus health and preventing conditions like sinusitis.