Aspectos morfológicos dos componentes do funículo espermático do veado-mateiro (Mazama americana)

Objetivo - Estudar os aspectos morfologicos de funiculos espermaticos de veado-mateiro (Mazama americana), (adultos), para melhor conhecer a morfologia de partes do aparelho reprodutor desta especie. Metodos - Para a descricao histologica utilizou-se tres pares de funiculos corados com hematoxilina-eosina, Picro-sirius, tricomico de Masson, tricomico de Mallory, reticulina de Gordon e Verhoeff. Resultados - Observou-se que os componentes do funiculo espermatico sao circundados por capsula de mesotelio e sob esta capsula encontra-se tecido conjuntivo e adiposo. Entre os componentes aparece tecido conjuntivo denso e tecido adiposo. A arteria testicular apresenta-se sinuosa e possui diâmetro regular; com tunica interna composta por endotelio e membrana elastica limitante interna; media com espessa musculatura lisa sustentada por fibras reticulares; e espessa adventicia composta por tecido conjuntivo denso continuo com tecido intervascular e com adventicias das veias. As veias testiculares que formam o plexo pampiniforme envolvendo totalmente a arteria testicular sao desprovidas de valvulas, e na tunica media a musculatura lisa apoiada em irregular rede de fibras reticulares. O ducto deferente coloca-se na periferia. Conclusao - Os achados permitem concluir que o veado-mateiro apresenta o funiculo espermatico circundado por capsula, com a arteria testicular totalmente envolvida pelo plexo pampiniforme formado pelas veias testiculares, e apresenta entre seus componentes, tecido conjuntivo denso e tecido adiposo.(AU) Objective - To study morphological aspects of spermatic cords of the adult deer (Mazama americana) for a better knowledge breaks of the morphology of the reproduction apparatus. Methods - A histological study of three spermatic cord pairs stained with hematoxylin-eosin,Picro-sirius, Masson, Mallory, Gordon and Verhoeff was used. Results - It was observed that its components were enveloped by a mesothelium capsule. Under this capsule, there was connective tissue and adipose tissue. Among the components there were dense connective tissue and adipose tissue. The testicular artery is sinuous, consisting of an inner layer formed by endothelium and an inner limiting elastic membrane, a middle layer formed by a thick smooth muscle layer supported by reticular fibers and an outer layer consisting of dense connective tissue contiguous to intervascular tissue and the adventitia layers of the veins. The testicular veins form the pampiniform plexus which totally surrounds the artery, presenting irregular lumens, with no valves and a middle layer formed by a thin smooth muscle layer supported by a irregular chain of reticular fibers. The duct deferens is located at the periphery. Conclusion - Achieved findings lead to the conclusion of a histological studyof spermatic cords of the deer, its components were enveloped by a capsule, the testicular veins form the pampiniform plexus which totally surrounds the testicular artery, among the components there were dense connective tissue and adipose tissue.(AU)