Plexo braquial de macacos-prego (Sapajus libidinosus).

Abstract

The species of capuchin - monkey (Sapajus libidinosus) has contributed to studies of the brachial plexus, which has been extensively studied in species of the Macaca genus. These studies on the brachial plexus of primates contribute to the provision of information regarding functional anatomy, clinical procedures, surgical procedures, injuries as well as anesthetic procedures. The research was based on six monkeys of the species Sapajus libidinosus, adults, donated by CETAS / IBAMA / PB to the Laboratory of Veterinary Anatomy (CSTR) of the Universidade Federal de Campina Grande (UFCG). The cadavers were fixed and stored in 10% aqueous formaldehyde solution and subsequently dissected. The findings revealed that the brachial plexus of Sapajus libidinosus is composed of neural fibers coming from the union of the dorsal and ventral roots of the cervical vertebral segments C5 to C8 and thoracic T1, and organized in four main trunks, also having a subdivision in the middle trunk, in Dorsal and ventral. Each trunk formed a nerve or a group of nerves, which origin varied among the studied animals, being these trunks classified in cranial trunk, dorsal median trunk, ventral middle trunk and caudal trunk. The origins, trajectories and territory of innervation of the nerve trunks of the brachial plexus of Sapajus libidinosus are similar to those of other primates, but small variations occur in the course.