ethmoidal process of inferior nasal concha ethmoidal process of inferior nasal concha behind the lacrimal process of the inferior nasal conchae lies a broad, thin plate, the ethmoidal process, which ascends to join the uncinate process of the ethmoid; from its lower border a thin lamina, the maxillary process, curves downward and lateralward; it articulates with the maxilla and forms a part of the medial wall of the maxillary sinus. ethmoidal process of inferior nasal concharight inferior nasal concha. medial surface. (ethmoidal process labeled at center right.)detailsidentifierslatinprocessus ethmoidalis conchae nasalis inferiorista98a02.1.08.004ta2743fma54742anatomical terminology