O cachorro-do-mato-de-orelhas-curtas (Atelocynus microtis) é uma das espécies mais raras de Canídeos Sul-americanos. Com o objetivo de descrever a morfologia deste animal e engrandecer o estudo da neuroanatomia comparada, estudou-se a composição anatômica do plexo braquial de um exemplar, fêmea, proveniente de Paragominas-PA doado após morte por atropelamento ao Laboratório de Pesquisa Morfológica Animal (LaPMA), da Universidade Federal Rural da Amazônia (UFRA). O animal foi fixado em solução aquosa de formaldeído 10% e posteriormente realizou-se dissecação bilateral da origem do plexo braquial. No A. microtis o plexo braquial é derivado dos ramos ventrais dos três últimos nervos espinhais cervicais e do primeiro nervo espinhal torácico (C6-T1). Os nervos derivados do plexo braquial com suas respectivas origens foram: n. supraescapular (C6 e C7), n. subescapular (C6), n. musculocutâneo (C6 e C7), n. axilar (C6 e C7), n. radial (C7 e C8), n. mediano (C7, C8 e T1), n. ulnar (C8 e T1), n. toracodorsal (C8 e T1), nn. peitorais craniais (C7, C8 e T1) e peitorais caudais (C8 e T1). O plexo braquial do A. microtis assemelhou-se ao descrito para o cão doméstico em relação à origem do segmento inicial e final, apresentando diferenças quanto à composição de alguns nervos.
ResumoO plexo braquial é constituído por raízes ventrais dos nervos espinhais que se unem para a formação dos troncos nervosos. É geralmente formado por contribuições dos três últimos nervos cervicais e dos dois primeiros nervos torácicos. Devido à escassez de informações relativas à neuroanatomia, objetivou-se buscar a descrição da morfologia macroscópica do plexo braquial da jaguatirica (Leopardus pardalis). Foram utilizados dois exemplares de jaguatirica provenientes da área de Mina Bauxita Paragominas -PA, Brasil/Empresa Terra LTDA, doados após morte por atropelamento ao Laboratório de Pesquisa Morfológica Animal (LaPMA) da Universidade Federal Rural da Amazônia (UFRA), os quais foram fixados em solução aquosa de formoldeído a 10% por via intramuscular. Após fixação os animais foram dissecados, possibilitando a observação e identificação dos ramos ventrais dos nervos espinhais cervicais e torácicos que participaram da formação do plexo braquial. O plexo braquial mostrou-se formado por quatro troncos, os quais originaram os ramos ventrais dos nervos espinhais cervicais C 6 , C 7 e C 8 e do primeiro torácico T 1 . Tais troncos deram origem aos nervos supraescapular, subescapular, musculocutâneo, axilar, radial, mediano, ulnar, toracodorsal e torácico lateral. Palavras-chave: Jaguatirica; Nervos; Plexo braquial AbstractMorphological description of the brachial plexus in ocelot (Leopardus pardalis). The brachial plexus is formed by the ventral roots of the spinal nerves, which unite to form the nerve trunks. It is usually formed by contributions of the last three cervical nerves and the first two thoracic nerves. Due to the scarcity of information on neuroanatomy, this study aimed to determine the macroscopic morphology of the brachial plexus of the ocelot (Leopardus pardalis). In this work, we used two ocelot specimens from the area of the Paragominas Bauxite Mine, PA, Brazil/Empresa Terra LTDA, with permission from SEMA -BP Nos. 455/2009 and 522/2009. The animals were donated to the Research
RESUMO.-Os autores descreveram a origem e composição do plexo braquial de quatro Saimiri sciureus, pertencentes ao Centro Nacional de Primatas (Cenp), Ananindeua/PA, os quais foram ϐixados com formaldeído e dissecados. Os achados revelaram que o plexo braquial desta espécie é constituído por ϐibras neurais provenientes da união das raízes dorsais e ventrais das vértebras cervicais C4 a C8 e torácica T1, e organizado em quatro troncos. Cada tronco formou um nervo ou um grupo de nervos, cuja origem variou entre os animais; na maioria, foi encontrado o tronco cranial originando o nervo subclávio, o tronco médio-cranial dando origem aos nervos supraescapular, subescapular, parte do radial, e em alguns casos ao nervo axilar, nervo musculocu- The authors described the origin and composition of the brachial plexus of four Saimiri sciureus, from the National Primate Center (Cenp), Ananindeua/PA, which were ϐixed with formaldehyde and dissected. Findings revealed that the brachial plexus of this species is composed by nervous ϐibers from the roots of cervical vertebrae C4 to C8 and thoracic vertebrae T1, and organized into four branchs. Each branch has formed a nerve or a group of nerves, the origin was varied between animals, mostly were found the cranial trunk originate the subclavian nerve; the medium-cranial originate the suprascapular, subscapular, part of radial and in some cases the axillary, musculocutaneous and median nerves; the medium-caudal trunk originate part of radial nerve and in some cases the axillary, musculocutaneous, median, thoracodorsal, ulnar and medial cutaneous of forearm nerves, the last two nerves also originate from the caudal trunk. tâneo e ao nervo mediano; o tronco médio-caudal formou parte do nervo radial, e em alguns casos os nervos axilar, nervo musculocutâneo, nervo mediano, nervo toracodorsal, nervo ulnar e nervo cutâneo medial do antebraço, sendo os dois últimos também originados no tronco caudal. TERMOS DE INDEXAÇÃO: Nervos, plexo braquial, primata não humano, macaco-de-cheiro, Saimiri sciureus.
The ocelot (Leopardus pardalis) is a Felidae of wide geographical distribution and food flexibility; therefore, it is essential to understand the morphology of the species. Thus, we aimed to describe its lingual morphology in order to gain information regarding the anatomy of this carnivore's digestive system. The tongues were removed for ex situ macroscopic and morphometric analyses, as well as for light microscopy and scanning electron microscopy, of fragments of the different lingual regions. The tongue of L. pardalis had an elongated form that was subdivided into the apex, body and root, in which four papillary types were observed: filiform, fungiform, circumvallate and conical. It presented with a stratified, keratinized squamous epithelium, followed by loose and dense connective tissues, as well as a skeletal striated musculature that comprised most of the organ. In addition, in scanning electron microscopy the filiform papillae showed a complex with multiple layers of keratin with triangular shape projected caudally in oral cavity. The fungiform papillae were distributed among the filiform and showed a rounded shape with some gustatory pores, and are keratinized but in a lower intensity if compared with filiform. The vallate papillae, located in lingual root, showed an oval format, had a deep groove surrounded the papillae and some gustatory pores. The conical papillae are located in lingual root and are similar to the filiform. The tongue of L. pardalis resembles other carnivorous species, mainly among felids. However, it differed in relation to the quantity of vallate papillae and the absence of foliate papillae.
Recebido para publicação 12.09. Palavras-chave: anatomia, artérias da base do encéfalo,Tamandua tetradactyla. ABSTRACT The arterial circuit of the brain is of great importance because it is responsible for vascularization of the brain and this is the main organ of the central nervous system and responsible for receiving and processing information. The species was chosen because it is a mammal belonging to the
The common marmoset is an important Neotropical primate for biomedical research. With the intention of providing pelvimetric values that allow the selection of animals with better characteristics for reproduction, we studied the X-ray of the pelvis, in ventro-dorsal projection of 12 adult animals, six males and six females, belonging to the National Center of Primates -CENP. The measurements were made to right diagonal diameters (RDD), left diagonal diameter (LDD), bi-iliac middle diameter (BIMD), bi-iliac upper diameter (BIUD), bi-iliac lower diameter (BILD), sacrum-pubic diameter (SPD), and the input area of the pelvis (IAP), which were compared in relation to sex and bodily correlated with the biometrics. The results of the means and standard deviations regarding pelvimetry (cm) were: for the RDD in males of 1.91±0.14 and in the females of 2.05±0.08; LDD in males of 1.85±0.16 and in females of 2.03± 0.08; BIMD in males of 1.46±0.12 and in the females of 1.5±0; BIUD showed in males 1.3±0.1 and in females of 1.3±0.06; BILD in males of 1.35±0.15 and in females of 1.25±0.08; SPD in males of 1.68±0.09 and in females of 1.93±0.13; IAP in males of 1.9±0.26 and in the females of 2.23±0.13. It was concluded that the pelvis of Callithrix jacchus could be classified as dolicopelvic type, there is sexual dimorphism in relation to the pelvis of adult animals and that the bodily measurements have low positive correlation with pelvic measurements.Keywords: radiology, pelvis, primates RESUMO O sagui-de-tufo-branco se destaca como um importante primata neotropical para as pesquisas biomédicas. Com o intuito de fornecer valores pelvimétricos que permitam a seleção de animais com melhores características para a reprodução, estudaram-se radiografias da pelve, em projeção ventrodorsal, de 12 animais, sendo seis machos e seis fêmeas, adultos, pertencentes ao Centro Nacional de Primatas -CENP. As mensurações realizadas foram referentes aos diâmetros diagonal direito (DDD), diagonal esquerdo (DDE), bi-ilíaco médio (DBIM), bi-ilíaco superior (DBIS), bi-ilíaco inferior (DBII), sacropúbico (DSP), além da área de entrada da pelve (AEP), os quais foram comparados em
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