Middle ear中耳 Boundaries. (1) Roof or tegmental wal|鼓室盖 (2) inferior wall or jugular wal预顶静脉壁: separates the cavity from superior bulb of internal jugular V Stapes in oval window Aenor MEDIAL condary tympane momorarel canal meatus Eardrum memhrane and fron the mienMiddle ear 中耳 ◼ Boundaries: (1) Roof or tegmental wall 鼓室盖: (2) inferior wall or jugular wall颈静脉壁: separates the cavity from superior bulb of internal jugular v