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Weberian apparatus
(english) Series of four or five modified vertebrae which connect the swim bladder to the inner ear of Ostariphysian fishes and convey pressure changes and sound; a set of structures, including a series of small bones, connecting the dorsal wall of the air bladder to the region of the ear; in carp, minnows, suckers, catfishes, and other ostariophysan fishes. Usually the definition includes the first vor vertebrae (two and three may be fused), a supporting unit or pars sustentaculum comprising two transverse plates projecting downwards from the fourth vertebra enclosing a circular space for the aorta and the neural complex comprising modified neural arches and spines. (See also: ossicle, swim bladder, Ostariophysi)
aparelho de Weber
(portuguese) Série de quatro ou cinco vertebras modificadas que ligam a bexiga natatória ao ouvido interno dos peixes ostariofísios. (See also: ossicle, swim bladder, Ostariophysi)

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