noun
vestibular system; vestibular organs
Anatomical term referring to the sensory organs in the inner ear responsible for balance and spatial orientation.
前庭器官は内耳にあって、平衡感覚をつかさどっている。
The vestibular organs are located in the inner ear and govern the sense of balance.
三半規管 refers specifically to the semicircular canals, which are part of the vestibular system. 前庭器官 is a broader term encompassing the entire vestibular apparatus.
Compound of 前庭 (vestibule) + 器官 (organ). The term is a direct anatomical designation.