NCIt related terms : Ethmoid sinus structure (body structure);
NCIt definition : A sinus of the meatuses of the nasal cavity.;
Alternative definition : CDISC: A sinus of the meatuses of the nasal cavity. (NCI); NCI-GLOSS: A type of paranasal sinus (a hollow space in the bones around the nose).
Ethmoid sinuses are found in the spongy ethmoid bone in the upper part of the nose
between the eyes. They are lined with cells that make mucus to keep the nose from
drying out.;