pars inferior


pars inferior
part of the internal ear of fishes comprising two sac-like structures, the sacculus and lagena, both q.v. These function principally in sound reception. The endolymphatic duct rises upwards from from the sacculus and, in Myxini ends blindly in a cartilaginous capsule, in cartilaginous fishes opens to the outside via a narrow aperture, in chondrosteans and Clupeidae is open in young but ends near the endolymphatic sac in adults, and in most teleosts is absent or short without an external opening, terminating in the endolymphatic sinus

Dictionary of ichthyology. 2009.

Look at other dictionaries:

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  • pars inferior alaris lobuli centralis cerebelli — [TA] the inferior part of the wing of the central lobule of the cerebellum (HII); called also p. ventralis alaris lobuli centralis cerebelli [TA alternative] and ventral part of wing of central lobule of cerebellum …   Medical dictionary

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  • inferior part of duodenum — pars horizontalis duodeni …   Medical dictionary


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