Paranasal sinuses

Definition

Paranasal sinuses are air-filled spaces located within the bones of the skull and face, connected to the nasal cavity. They help to lighten the weight of the skull, produce mucus, and influence the tone of voice.

Related terms

Nasal Cavity:

The main internal area of the nose through which air passes, getting filtered, warmed, and humidified before reaching the lungs.

Mucosa:

The moist tissue lining some organs and body cavities, including the nose and sinuses, which secretes mucus.

Sphenoid Sinus: One of the four types of paranasal sinuses located behind the eyes in the sphenoid bone, contributing to respiratory health and voice resonance