Anatomia aplicada à cavidade torácica do sagui-de-tufos-brancos (Callithrix jacchus Linnaeus, 1758).

Abstract

Anatomy applied to the thoracic cavity of the white-tufted marmoset (Callithrix jacchus Linnaeus, 1758). The aim of this study was to describe the anatomy of the thoracic cavity of the white tufted tuna (Callithrix jacchus), identifying the limits of the cavity and delimiting the cardiac and pulmonary area, and proposing points of: thoracentesis, pericardiocentesis, auscultation, percussion and pulmonary puncture and cardiac auscultation. For the study, 10 carcasses of Callithrix jacchus, of both sexes (5 females and 5 males), donated by CETAS of IBAMA-PB, were used. The animals were thawed, fixed and preserved with 10% formaldehyde solution. After the dissection procedure, it was observed that the thoracic cavity in five animals had 12 ribs, one had 11 and four had 13. Two longitudinal imaginary lines were defined delimiting the lateral costal region, one at the level of the caudal angle of the scapula and another at the level of the shoulder joint, dividing into dorsal, middle and ventral thirds. In quadrupedal position the auscultation and pulmonary percussion are possible in the dorsal and middle thirds, respectively, 6º to 10º and 4º to 9º intercostal space. In dorsal decubitus and thoracic abduction allows the exploration of a wide lung area, from the 4th to the 9th intercostal space in the dorsal third and from the 1st to the 8th in the middle third. The pulmonary puncture proposes the dorsal third of the 6th to 8th intercostal space, bilaterally. For thoracentesis, the ventral third is indicated in the costochondral joint line, in the 6th intercostal space on the left side, and 4º to 7º on the right side. The area of cardiac exploration is determined in the ventral third, with abducting thoracic limbs, allowing the 2nd to 6th intercostal space to be heard on the left side and 1 to 6º on the right side. Pericardiocentesis can be made in the ventral third, the one closest to the sternum, from the 3rd to the 5th intercostal space on the left side. Despite the anatomical small size of the animals, it is concluded that it is possible to perform both the simplest and the most invasive procedures in the thoracic cavity of Callithrix jacchus.