utriculith

utriculith
lapillus (plural lapilli)(the otolith in the utriculus. It is held in a vertical position against the cells of the utricular macula which is innervated by the anterior branch of cranial nerve VIII (the stato-acoustic nerve). Movements of the lapillus send signals to the brain and help the fish to maintain equilibrium. It is usually very small but is the largest otolith in Siluridae)

Dictionary of ichthyology. 2009.

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  • lapillus — (plural lapilli)) the otolith in the utriculus of the pars superior. It is held in a vertical position against the cells of the utricular macula which is innervated by the anterior branch of cranial nerve VIII (the stato acoustic nerve).… …   Dictionary of ichthyology

  • utriculus — (plural utriculi)) the uppermost sac of the inner ear into which the semicircular canals enter. Contains the lapillus or utriculith otolith, usually the smallest, in Teleostei and minute particles of calcium carbonate called otoconia in endolymph …   Dictionary of ichthyology

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