Anatomia da cabeça do tamanduá-bandeira (Myrmecophaga tridactyla) por meio da tomografia computadorizada. Bases para conduta clínica.
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Data
2021-01-08
Autores
Farha, Aline Herrera
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Universidade Estadual Paulista (Unesp)
Resumo
O tamanduá-bandeira (Myrmecophaga tridactyla) é o maior representante da família Myrmecophagidae e possui diversas adaptações morfológicas, fisiológicas e comportamentais relacionadas aos hábitos alimentares e de defesa. O objetivo deste estudo foi identificar as estruturas anatômicas encontradas na cabeça do tamanduá-bandeira (Myrmecophaga tridactyla) por meio da tomografia computadorizada. Para isto, foram usados dois cadáveres de tamanduá-bandeira, adultos e fêmeas. O exame tomográfico foi realizado de rostral para caudal. Posteriormente, as cabeças desses animais foram seccionadas em cortes transversais de aproximadamente 1,5 cm cada. As imagens tomográficas foram comparadas com os cortes anatômicos. A associação entre a tomografia computadorizada e as secções anatômicas permitiu a visualização de estruturas anatômicas encontradas nas cavidades nasal, oral, craniana, faríngea e da orelha. Foi observada uma cavidade oral alongada delimitada pela mandíbula também alongada. Esta cavidade achava-se ocupada principalmente por uma língua delgada e alongada formada principalmente pela união dos músculos esternoglossos. A nasofaringe e orofaringe estenderam-se até o pescoço em nível da quinta vértebra cervical. Os achados deste estudo permitem sugerir que o tamanduá-bandeira possui uma cabeça com estruturas morfologicamente adaptadas ao seu hábito alimentar, como um crânio, língua, ossos estiloióideos e mandíbula alongados. Além disso, pelos resultados do estudo, é possível sugerir que a tomografia computadorizada seja uma ferramenta aliada da rotina veterinária de animais selvagens, já que permitiu a identificação de estruturas anatômicas encontradas na cabeça do tamanduá-bandeira.
The giant anteater (Myrmecophaga tridactyla) is the largest representative of the Myrmecophagidae family and has several morphological, physiological and behavioral adaptations related to feeding and defense habits. The aim of this study was to identify the anatomical structures found on the head of the giant anteater (Myrmecophaga tridactyla) using computed tomography. For this, two giant anteater corpses, adult and female, were used. The tomographic exam was performed from rostral to caudal. Subsequently, the heads of these animals were sectioned in cross-sections of approximately 1.5 cm each. Tomographic images were compared with anatomical sections. The association between computed tomography and anatomical sections allowed the visualization of anatomical structures found in the nasal, oral, cranial, pharyngeal and ear cavities. An elongated oral cavity delimited by the elongated mandible was also observed. This cavity was mainly occupied by a thin and elongated tongue formed mainly by the union of the sternoglossal muscles. The nasopharynx and oropharynx extended up to the neck at the level of the fifth cervical vertebra. The findings of this study allow us to suggest that the giant anteater has a head with structures morphologically adapted to its feeding habits, such as a skull, tongue, styloid bones and elongated mandible. In addition, from the results of the study, it is possible to suggest that computed tomography is a tool associated with the veterinary routine of wild animals, since it allowed the identification of anatomical structures found in the head of the giant anteater.
The giant anteater (Myrmecophaga tridactyla) is the largest representative of the Myrmecophagidae family and has several morphological, physiological and behavioral adaptations related to feeding and defense habits. The aim of this study was to identify the anatomical structures found on the head of the giant anteater (Myrmecophaga tridactyla) using computed tomography. For this, two giant anteater corpses, adult and female, were used. The tomographic exam was performed from rostral to caudal. Subsequently, the heads of these animals were sectioned in cross-sections of approximately 1.5 cm each. Tomographic images were compared with anatomical sections. The association between computed tomography and anatomical sections allowed the visualization of anatomical structures found in the nasal, oral, cranial, pharyngeal and ear cavities. An elongated oral cavity delimited by the elongated mandible was also observed. This cavity was mainly occupied by a thin and elongated tongue formed mainly by the union of the sternoglossal muscles. The nasopharynx and oropharynx extended up to the neck at the level of the fifth cervical vertebra. The findings of this study allow us to suggest that the giant anteater has a head with structures morphologically adapted to its feeding habits, such as a skull, tongue, styloid bones and elongated mandible. In addition, from the results of the study, it is possible to suggest that computed tomography is a tool associated with the veterinary routine of wild animals, since it allowed the identification of anatomical structures found in the head of the giant anteater.
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Palavras-chave
Crânio, Diagnóstico por imagem, Mirmecófagos, Xenartras, Skull, Diagnostic imaging, Myrmecophagy, Xenarthra