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LES DIFFERENTES STRUCTURES NERVEUSES CHEZ SYNISOMA NADEJDA REZIG, 1989 (ISOPODE, VALVIFÈRE) [THE VARIOUS NERVOUS STRUCTURES OF SYNISOMA NADEJDA REZIG, 1989 (ISOPODA, VALVIFERA)]

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The nervous system of Synisoma nadejda comprises the brain, the suboesophageal mass, and the ventral nerve cord. The brain is composed of the protocerebrum, laterally prolonged into the optic nerves; the deutocerebrum, which is the origin of the antennular nerves; and the tritocerebrum, which innervate the antennae. The suboesophageal mass provides the nerves for the mouthparts. The thoracic nerve cord ensures the innervation of thoracic appendages and internal organs. The abdominal nerve cord innervates pleopods and uropods. Associated with the brain are the Y organ or ecdysial gland, the antennal gland, the Bellonci organ, and the sinus gland.

Le système nerveux chez Synisoma nadejda est formé par: le cerveau, la masse sous-œsophagienne et la chaîne ganglionnaire ventrale. Le cerveau comprend le protocérébron qui se prolonge latéralement par les nerfs optiques, le deutocérébron est à l'origine des nerfs antennulaires et le tritocérébron innerve les antennes. La masse sous-œsophagienne porte latéralement les nerfs des pièces buccales. La chaîne nerveuse thoracique assure l'innervation des appendices et des organes internes. La chaîne nerveuse abdominale innerve les pléopodes et les uropodes. Les différents organes associés au cerveau sont: l'organe Y ou glande de mue, la glande antennaire, l'organe de Bellonci et la glande du sinus.

Affiliations: 1: Laboratoire de Biologie Animale, Faculté des Sciences de Tunis, Campus Universitaire, Tunis 1060, Tunisie

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/content/journals/10.1163/156854000505001
2000-10-01
2016-09-25

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