Armadillos of the species Dasypus novemcinctus and Euphractus sexcintus are xenarthrico is a mammal that inhabits fields and has several eating habits. This study proposes to analise the macroscopic anatomy of the nervous system of the armadillo peba, enabling comparisons with other mammals. Three animals of each species were to donated ICMBio - Chico Mendes Institute for Biodiversity, the Serra da Capivara National Park, authorized by SISBIO 22826-01, victims of poaching and they had died. The animals were stored in Histology and Embryology Laboratory of the Morphology Department of Health Sciences Center of the Federal University of Piauí. Initially, they were fixed with 10% buffered formalin for 24 hours and then dissected for observation of the organs forming the central nervous system. The central nervous system Armadillo consists of the brain and spinal cord. The macroscopic morphology, the central nervous system Armadillo resembles those of other mammals, however, anatomical features found in the brain and spinal cord suggest a higher olfactory expression and motor skills. https://doi.galoa.com.br/doi/10.17648/jibi-2448-0002-1-1-4200
RESUMO: O tamanduá-mirim (Tamandua tetradactyla) (Linnaeus, 1758) apresente um mecanismo de alimentação ativo graças a atividade sinérgica dos músculos extrínsecos relacionados com ele, como por exemplo, o músculo esternoglosso. Este trabalho se propõe caracterizar este músculo tendo em conta suas orígens e as inserções, e discutir os resultados com espécies similares já estudadas. Foram utilizadas cinco tamanduás-mirins doados pelo ICMBio. As amostras foram submetidas a procedimentos de dissecação para o acesso a cavidade torácida e visualização do músculo esternoglosso. O músculo esternoglosso do tamanduá-mirim se origina nas laterais da cartilagem xifóide e continua com dois feixes musculares na direção cranial, que une-se perto da base da lingua, fazendo parte de sua constituição. Durante o curso do músculo no existe qualquer conexão com o osso hióide e estruturas adjacentes, unido cranialmente com a lingua, o que justifica a nomenclatura 'esternoglosso' e não 'esternohioglosso'. Portanto, as características musculares combinados demostram um aspecto específico analisados dentro das espécies e destaca a principal função dos músculos como para mover a língua dentro e fora da cavidade oral. Assim, a ausencia deste músculo não proporciona as condições para alimentação animal, já que sua direta relação com a captação de alimentos é através da lingua.
ABSTRACT:The lesser anteater (Tamandua tetradactyla) (Linnaeus, 1758) presents a feed mechanism triggered thanks to the synergistic activity of the extrinsic muscles related to it, with the example sternoglossus muscle. This paper proposes characterizing this muscle, considering the origins and insertions, and discussing the results compared to similar species studied. Five anteaters donated by ICMBio were used. The samples were subjected to dissection procedures for access to the thoracic cavity and visualization of the muscle. The sternoglossus muscle of the lesser anteater originates on the side of the xiphoid process and continues with two bundles of muscles in the cranial direction that join near the base of the tongue, as part of its constitution. During the course of the muscle there is no connection to the hyoid bone and adjacent structures, connecting the cranium to the tongue, which justifies the nomenclature sternoglossus rather than sternohyoglossus. Thus, the combined muscle characteristics demonstrate a specific aspect within the analyzed species and highlight the main function performed by the muscles to move the tongue out of the oral cavity. Therefore, the absence of this muscle makes impossible the animal feed, since its directly related to the seizure of food through tongue.
SILVA, A.B.S. et al. Distribuição intraparenquimal da artéria hepática em tatu-peba (Euphractus sexcinctus) e tatu-verdadeiro (Dasypus novencinctus). PUBVET, Londrina, V. 8, N. 21, Ed. 270, Art. 1805, Novembro, 2014
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