Each cavity is divided into three long, narrow passages by the two pairs of Turbinated bones.
"Common Diseases of Farm Animals"
R. A. Craig, D. V. M.
Between it and the inferior Turbinated body is the middle meatus, with which communicate the openings of the maxillary sinus, the frontal sinus, and the anterior ethmoidal cells.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
Nasal polypi spring from the mucous membrane covering the middle Turbinated bone and from the adjacent parts of the middle meatus, but rarely from the septum.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson