Origins of plexus brachial in Iguana iguana iguana


  • Rozana Cristina Arantes Universidade Federal do Tocantins
  • Frederico Ozanam Carneiro e Silva Universidade Federal de Uberlândia
  • Ana Kelen Felipe Lima Universidade Federal do Tocantins
  • Maria de Jesus Veloso Soares Universidade Federal do Tocantins
  • Hassen Jerbi Ecole Vétérinaire Sidi Thabet



Forelimb, Peripheral nervous system, Spinal nerve, Iguana iguana iguana


This paper aims to describe the origin of the brachial plexus of 12 iguanas, male and female, which were donated already dead by the Wild Animal Screening Center and Independent Company of Highway and Environmental Police of the Araguaína, Tocantins State, to Veterinary Anatomy Laboratory of Federal University of Tocantins, Araguaína campus These animals were fixed by intramuscular injections of aqueous 10% formalin. It was made a parallel incision to dorsal midline from the skull to the caudal ribs. It was pulled all the epiaxial muscles eight ribs, the periosteum, exposing and individualizing the ventral rami of spinal nerves that make up the brachial plexus. The ventral rami of spinal nerves C6, C7, C8, T1 and T2 form the brachial plexus in 12 iguanas. In 41.6% of cases, the branches involved were C6, C7, C8 and T1; in 33.4%, the branches C6, C7, C8, T1 and T2; 16.6% the branches C7, C8, T1 and T2 and in 8.4%, the branches C7, C8 and T1. The branches ventral C7, C8 and T1 formed three trunks and C6 and T2, when present, consisted of nervous fillet. There was variation in number of vertebrae in Iguana iguana iguana which caused oscillations in anastomoses, that constitute the nerves of brachial plexus. The axillary, subscapular, cutaneous, pectoral, coracobrachialis, radial, median, ulnar, thoracodorsal nerves are the main nerves that constitute the brachial plexus in iguanas.


Download data is not yet available.




How to Cite

ARANTES, R.C., CARNEIRO E SILVA, F.O., LIMA, A.K.F., SOARES, M. de J.V. and JERBI, H., 2017. Origins of plexus brachial in Iguana iguana iguana . Bioscience Journal [online], vol. 33, no. 3, pp. 670–674. [Accessed25 February 2024]. DOI 10.14393/BJ-v33n3-34999. Available from:



Agricultural Sciences