Morfologia macroscópica da traqueia e laringe do gambá

Abstract

Metatheria (Marsupialia) is a group formed by seven orders, 19 families and 81 genera, containing numerous species. It is thus organized on the basis of anatomical similarities and physiological, particularly related to reproduction. The baby carrier is located in the caudal abdominal region, has a horseshoe shape and inside the mammary papillae are "U", in number of 11, arranged in pairs except one that was centrally located, and the papillae that were connected to the pups were more developed, in relation to the length, and the rest had an inactive aspect. The respiratory system comprises the lungs and a system of tubes that communicate the lung parenchyma with the outside environment. It is customary to distinguish in the respiratory system, a conductive portion formed by the nasal fossae, nasopharynx, larynx, trachea, bronchi and bronchioles, and a respiratory portion represented by the terminal portions of the bronchial tree and containing the alveoli, the only place where exchanges take place. gaseous. Between these two there is a short portion, called a transition. The research aimed to describe the macroscopic morphology of the trachea and larynx of opossums (Didelphis sp.). Five opossums, euthanized, from the Unesp breeding farm in Araçatuba were used. The possums' trachea and larynx were measured using a caliper and the larynx cartilages were separated and also measured according to the following parameters: a) weight; b) latero-lateral width; c) cranio-caudal height; d) dorsoventral length. The trachea and larynx of the respective animals were photographed using a Sony Mavica 3.2 MP digital camera. The nomenclature used was referred to according to the International Commitee on Veterinary Gross Anatomical Nomenclature (2005).