这个词是什么意思？
A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D005004 · MeSH 2026。
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