The utricle is the part of the inner ear that serves as a "position sensor" to know which way the head moves in the horizontal plane. It comes from the Latin utriculus, a diminutive of uter, utris ("wineskin, leather bag"). See saccule. The prostatic utricle or prostatic vesicle is a blind orifice found in the male prostate. It is a development of the embryonic Müller's duct in the male, which in the female ends up forming the uterus. 3º_ A type of nut that is shaped like a bladder or an inflated sac.
