utricle /yo̅o̅″trikəl/ [L, utriculus, small bag] , 1. a small sac. 2. the larger of two membranous pouches in the vestibule of the membranous labyrinth of the inner ear. It is an oblong structure that communicates with the semicircular ducts by five openings and receives utricular filaments of the vestibular branch of the vestibulocochlear nerve. Compare saccule.
