orifice 孔口 round window of inner ear 内耳圆窗 EMAPA:19239 FMA:56932 GAID:878 MA:0002814 MESH:D012405 UBERON:0002502 cochlear window fenestra cochleae fenestra rotunda round window round window of petrous part of temporal bone the opening on the medial wall of the middle ear leading into the cochlea, closed in life by the secondary tympanic membrane; serves to regulate fluid pressure in the inner ear uberon 中耳内侧壁通向耳蜗的开口，在生物体中由二级鼓膜封闭；用于调节内耳中的流体压力 圆窗 正圆窗 蜗窗(cochlear window) 蜗窗(fenestra cochleae) 颞骨岩部的圆窗 anatomical conduit 解剖导管 neural crest-derived structure 神经嵴衍生结构