Ethmoid sinus anatomy

This illustration examines the lateral anatomy of the ethmoid bone with emphasis on surgically relevant landmarks. Rendered from a lateral perspective, the work maps the basal lamella, uncinate process, and ethmoidal air cells alongside key arterial and drainage pathways.

The composition clarifies how the frontal and ethmoidal sinuses channel into the middle meatus, highlighting the structural boundaries that guide endoscopic navigation. By integrating labelled schematics with a dimensional anatomical rendering, the series supports spatial understanding of a region where millimetre-scale precision determines surgical safety and outcome.