The appendicular sinuses. Frontal, sphenoid, labyrinth and the best known maxillary sinus. These seemingly simple formations serve many functions👇🏻 - Reduces the weight of the anterior parts of the skull - Creates an anti-impact "buffer" for facial trauma - The airflow inside the sinuses is slowed down and due to this, it is additionally warmed and moisturized - Participate in the formation of the individual timbre of the voice (that's why we "growl" when catching a cold) Thus, the importance of the appendicular sinuses is underestimated.