Anatom3DParanasal sinuses
Sinus paranasales · Vedlejší dutiny nosní
Respiratory system
Looks like
Four pairs of air pockets in the bones around the nose, each draining through a narrow hole.
What it does
Lighten the skull, warm the air and give the voice its resonance.
Keeping it well
Saline rinses, humid air, treat allergy; pain with fever and one-sided blockage suggests infection.