paranasal sinus

Introduction

Paired, air-filled cavities in the bones of the face.

Structure

• the paranasal sinuses are lined with mucus membrane continuous with that of the nasal cavity.

* images showing location of paranasal sinuses

More general terms

• sinus

More specific terms

• ethmoidal sinus; ethmoidal antrum; ethmoidal air cell
• frontal sinus
• maxillary sinus; maxillary antrum
• sphenoidal sinus

Additional terms

• sinusitis

Component of

• head