Sinuses

+Sinuses are hollow, air-filled spaces within the [Skull](/wiki/skull), connected to the nasal cavity. These chambers, lined with tissue, help to lighten the head and produce [Mucus](/wiki/mucus) to moisten inhaled air and trap particles.

+## See also

+- [Nose](/wiki/nose)

+- [Breathing](/wiki/breathing)

+- [Inflammation](/wiki/inflammation)