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ORIGIN AND ANTIMERIC DISTRIBUTION OF THE OBTURATOR NERVES IN THE NEW ZEALAND RABBITS

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posted on 2019-07-24, 02:52 authored by Renata Medeiros do Nascimento, Thais Mattos Estruc, Jorge Luiz Alves Pereira, Erick Candiota Souza, Paulo Souza Junior, Marcelo Abidu-Figueiredo

Abstract New Zealand rabbits are widely used as experimental models and represent an important casuistic in veterinary practices. The musculoskeletal conformation of rabbits frequently leads to the occurrence of lumbosacral lesions with neural involvement. In order to contribute to the comparative anatomy and the understanding of these lesions, the origin and distribution of the obturator nerves of 30 New Zealand rabbits (15 males and 15 females) previously fixed in 10% formaldehyde were studied by dissection. The obturator nerves were originated from the ventral spinal branches of L6 and L7 in 63.3% of the cases, L5 and L6 in 13.4%, only L7 in 13.4%, L7 and S1 in 6.6 % and of L6, L7 and S1 in 3.3%. The spinal segment that most contributed to the formation of the nerve was L7 (86.6% of the nerves). The obturator nerves emitted in all the specimens, a variable number of branches for the internal obturator, external obturator, pectineum, adductor and gracilis muscles. No significant differences were observed between the frequencies of the origin and muscular branches of the obturator nerves when comparing sex and antimers.

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    Ciência Animal Brasileira

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