noun
utricle; utriculus
Anatomical term for the larger of the two otolith organs in the inner ear, involved in detecting linear acceleration and head tilt.
卵形嚢は内耳の前庭にある平衡感覚に関わる器官です。
The utricle is an organ in the vestibule of the inner ear involved in the sense of balance.
球形嚢 (saccule) is the smaller otolith organ, also in the vestibule, primarily detecting vertical acceleration.
From 卵形 (egg-shaped) + 嚢 (sac, cyst). A descriptive anatomical term.