Contribution to the study of the spermatic cord in bovines of Nelore breed
Keywords:Anatomy of cattle, Testis, Arteries, Veins, Cattle (Nelore breed)
Spermatic cords and testis of 40 mature Nelore bulls, with age varying from 4 to 8 years, were used in this investigation wich was divided in 3 parts: histological study, vascular arrangement and artery length in the spermatic cord. In these animals, the spermatic cord is surrounded by a capsule of dense connective tissue covered by mesothelium which holds the vas deferens and arterioles, venules, lymphatics and contiguous nerves. Regarding the subcapsular situation, the adipose tissue that envolves the spermatic cord, diminishes in the central area where the connective tissue forms the continuing adventitia of the testicular artery and veins, following the vessels and nerves from this area. In the spermatic cord, the testicular artery shows a tortuous traject and a constant diameter, always envolved by a venous plexus formed by veins of different sizes with valvules. The testicular artery in the spermatic cord shows a mean, maximum and minimum length, respectively of 244.7 cm, 347.0 cm and 142.5 cm (right side) and 250.8 cm, 349.5 cm and 188.0 cm (left side). These data were obtained by rectification and by measuring of Neoprene latex "650" models. In the same way of mean, maximum and minimum values of 245.6 cm, 377.4 cm and 139.1 cm (right side) and 250.8 cm, 364.0 cm and 202.5 cm (left side) were obtained by weighing the Neoprene latex "650" models. There is no significant statistical difference at 5%, between either measuring methods or right and left sides.
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