Origem e distribuição anatômica do nervo isquiático de mão-pelada 1

ABSTRACT.- Pereira K.F., Paranaiba J.F.F.S., Helrigle C. & Araujo E.G . 2011. [ Origin and anatomical distribution of ischiatic nerve in the crab-eating raccoon ( Procyon can-crivorus ) . ] Origem e distribuicao anatomica do nervo isquiatico de mao-pelada ( Procyon cancrivorus ). Pesquisa Veterinaria Brasileira 31(Supl.1):74-78. Laboratorio de Anatomia Humana e Comparativa, Curso de Ciencias Biologicas, Universidade Federal de Goias, Cam-pus Jatai, BR 364 Km 192, Setor Parque Industrial, Jatai, GO 75800-000, Brazil. E-mail: kpereiraufg@gmail.comThe ischiatic nerve is the largest nerve in the body, belongs both to the sacral and lum-bosacral plexus in carnivores, continuing until the distal hind limb, and receives ibers from the ventral branch of the sixth and seventh lumbar nerves and the irst sacral nerve. We aim to describe the distribution of the sciatic nerve in raccoon ( Procyon cancrivorus ) and compare with data of literary domestic and wild animals. The animals are coming to collect on highways (killed by accident) and subjected to ixation in aqueous solution, 10% form-aldehyde. The dissection and photographic documentation (Sony α200 camera, 10.2mpx) shows the distribution of the sciatic nerve. The ischiatic nerve of raccoon innervates the hind limb passing between the middle and deep gluteal muscles, giving off branches to the muscles of the buttock and thigh, respectively, for the gluteus medius, gluteus biceps, semimembranosus, semitendinosus, biceps femoris, twins, quadratus femoris and adduc-tor magnus, sending the lateral cutaneous nerve of the thickness and low to supply the skin on the lateral surface of the leg and tail, respectively. Near the middle of the thigh nerve bifurcates into the tibial and peroneal nerve. The anatomical knowledge of the pattern of nervous raccoon (Procyon cancrivorus) is of fundamental importance in research to refer to the distribution of the ischiatic nerve, and show no disagreement with the correspond-ing data in the literature of domestic carnivores.