Definition: A small sac or pouch. A dilated portion of the membranous labyrinth receiving the ampullae of the semicircular canals; contains an area of sensory epithelium, the macula utriculi.
Synonym(s): utricle of vestibular labyrinth
Synonym(s): sacculus communis, utriculus1
[L. diminutive form of uter, leather bag]
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