Frontal sinus

Definition

The frontal sinus is a pair of air-filled cavities located above the eyes, within the frontal bone of the skull. These sinuses are part of the paranasal sinus system and play roles in humidifying inhaled air and enhancing voice resonance.

Related terms

Paranasal Sinuses: These are a group of four paired air-filled spaces that surround the nasal cavity, serving to warm, moisten, and filter the air we breathe.

Frontal Bone:

This is the bone that forms the front part of the skull and forehead, housing the frontal sinuses.

Mucosa:

A mucous membrane lining various body passages including those of the nose and sinuses, responsible for secreting mucus