LUNG LOBATION AND BRONCHIAL DISTRIBUTION IN THE CRAB-EATING RACCOON (Procyon cancrivorus, Cuvier, 1798) – A TWO-CASE REPORT

Abstract

This study aimed to anatomically describe the lung lobation and bronchial distribution in the crab-eating raccoon. Lungs of two animals were used after setting in a 10% formaldehyde solution. There are four lobes in the right lung: cranial, middle, caudal and accessory, with evident interlobar fissures. In the right lung lobation, in cranial and middle lobes, there is a lobar bronchus bifurcating into segmental bronchi; in the caudal lobe, there is two lobar bronchi, one small and cranial and other big and caudal. In the accessory lobe, the lobar bronchus divides into segmental bronchi. The left lung presents two lobes (cranial and caudal) with evident interlobar fissures and there is no division on the cranial lobe. The left cranial lobar bronchus gives off into three segmental bronchi, which divide into several subsegmental smaller bronchi. The left caudal lobar bronchus divides into a big segmental bronchus, which bifurcates, and a small segmental one. Lobation and bronchial distribution in crab-eating raccoon are different from those of the domestic carnivorous.