Paranasal Sinuses Health Care Set

The paranasal sinuses are a group of four paired air-filled cavities located in the skull. The maxillary sinuses are the largest, and are located in the cheekbones. The frontal sinuses are located in the forehead. The ethmoid sinuses are located between the eyes. The sphenoid sinuses are located behind the nose. The paranasal sinuses play a role in speech, smell, and facial expressions.