8 research outputs found
Morfologia e vascularização arterial das glândulas tireóides em gansos domésticos
Objetivou-se estudar a morfologia e o comportamento das artĂ©rias que se destinam Ă s glândulas tireĂłides, abordando seu nĂşmero, origem e ordenação em 30 gansos domĂ©sticos (Anser domestica), injetados com Neoprene látex 450 corado e fixados em solução aquosa de formalina a 10%. As glândulas tireĂłides apresentam-se pares, ovĂłides e localizam-se na extremidade cranial da cavidade tĂłraco-abdominal, relacionam-se com o nervo vago, veia jugular e artĂ©ria carĂłtida comum, e possuem em mĂ©dia de 0,97; 0,69 e 0,43 cm no antĂmero direito e 1,04; 0,62 e 0,38 cm no antĂmero esquerdo, para comprimento, largura e espessura, respectivamente. As glândulas tireĂłides recebem colaterais das artĂ©rias: carĂłtida comum, cervical cutânea ascendente, esofagotraqueobronquial, esofágica ascendente, comum do nervo vago ipsilateralmente e ramo esofágico, sendo estes dois Ăşltimos somente para a glândula direita. O nĂşmero de vasos variou de 1 a 5 vasos, sendo 2 vasos (15 casos, 50% ± 10) para o antĂmero direito e 3 vasos (12 casos, 40% ± 9,8) para o antĂmero esquerdo, o padrĂŁo mais freqĂĽentemente observado. As artĂ©rias tireĂłideas cranial, mĂ©dia cranial, mĂ©dia, mĂ©dia caudal e caudal estiveram presentes no antĂmero direito em 29, 8, 8, 14 e 29 gansos respectivamente, e no antĂmero esquerdo em 28, 5, 14, 5 e 28 gansos respectivamente. Um Ăşnico ramo, a artĂ©ria tireĂłidea, destinou-se a glândula em um animal Ă direita e em dois animais a esquerda.The present work aimed to study the morphology of the thyroid glands and the arterial behavior of their arteries, emphasizing number, origin and ordination of the vases in 30 domestic geese (Anser tames domestica). The animQals were injected with Neoprene latex "450" red-faced with specific pigment through the sciatic artery and fixed in aqueous solution of formalin 10%. In the animals studied the thyroid glands are even, oval and, when fixed, they have red chestnut color. These glands are located in the cranial extremity of the thoraco-abdominal cavity, linked with the vague nerve, jugular vein and common carotid artery and their topography may be variable in each antimere. The thyroid glands have in average 0.97, 0.69 and 0.43 cm in right side and 1.04, 0.62 and 0,38 cm in left side, to length, width and thickness, respectively. The arteries responsible to emit colateral branches to thyroid glands are: common cutaneous carotid arteries, cervical cutaneous ascendant, esophageal tracheal bronchial, esophageal ascendant, common of the vague nerve ipsilaterally and also for the branch esophageal, being these last ones only happened for the right gland. The vases number varied from 1 to 5, being 2 vases (15 cases, 50% ± 10) for the right antimere and 3 vases (12 cases, 40% ± 9,8), the model more frequently observed. The cranial, cranial middle, middle, caudal middle and caudal thyroid arteries were present in the right side in 29, 8, 8, 14 e 29 geese respectively, and in the left side in 28, 5, 14, 5 e 28 geese respectively. This was a unique vessel to gland, the thyroid artery, in one animal to right and in two animals to left side
Origin and distribution of the ischiatic nerve in mixed-breed sheep
O presente trabalho estudou, por meio de dissecações, a origem e distribuição do nervo isquiático em 30 fetos de ovinos (Ovis aries) sem raça definida, machos ou fĂŞmeas, obtidos de abortos, natimortos e mortes naturais de fĂŞmeas gestantes de nĂşcleos criatĂłrios na regiĂŁo do Triângulo Mineiro, estado de Minas Gerais, Brasil. Injetou-se formaldeĂdo a 10% por meio de canulação da aorta descendente torácica e, posteriormente, o material foi mantido submerso na referida solução por um perĂodo mĂnimo de 48 horas antes do inĂcio das dissecações. O nervo isquiático originou-se do ramo ventral do Ăşltimo nervo espinhal lombar, ora do sexto nervo espinhal lombar (L6), ora do sĂ©timo (L7), quando presente, e dos ramos ventrais dos primeiro e segundo nervos espinhais sacrais (S1 e S2, respectivamente), podendo apresentar a contribuição do ramo ventral do terceiro nervo espinhal sacral (S3). O nervo isquiático cedeu ramos aos mĂşsculos: glĂşteo superficial, glĂşteo mĂ©dio, glĂşteo acessĂłrio, glĂşteo profundo, gĂŞmeo, quadrado femoral, adutor, bĂceps femoral, semitendinoso e semimembranoso. Os ramos terminais do nervo isquiático foram os nervos tibial e fibular comum, tendo suas origens distalmente ao trocânter maior do fĂŞmur. Estatisticamente, atravĂ©s da aplicação do teste de Wilcoxon (0,05), nĂŁo houve diferenças significativas entre as frequĂŞncias dos ramos musculares do nervo isquiático e os antĂmeros, independentemente do nĂşmero de ramos musculares.Current research studied, by dissection, the origin and distribution of the ischiatic nerve in 30 fetuses of mixed-breed male or female sheep (Ovis aries), obtained from abortions, stillborns and natural deaths of pregnant females on farms in the Triângulo Mineiro region, state of Minas Gerais, Brazil. Formaldehyde 10% was injected through the cannulation of descending thoracic aorta and the material was kept immersed in the solution for at least 48 hours before dissection. The ischiatic nerve originated from the ventral branch of the last lumbar spinal nerve, either from the sixth lumbar spinal nerve (L6) or from the seventh (L7), when present, and from the ventral branches of first and second sacral spinalnerves (S1 and S2, respectively), and possibly from the ventral branch of third sacral spinal nerve (S3). The ischiatic nerve provided branches to the superficial gluteal, middle gluteal, accessory gluteal, deep gluteal, gemelli, quadratus femoris, adductor, biceps femoris, semitendinosus and semimembranosus muscles. The tibial and common peroneal nerves were the terminal branches of the ischiatic nerve, originating distally towards the greater trochanter of the femur bone. Wilcoxon’s test (0.05) showed that statistically there were no significant differences between the frequencies of the muscular branches of the ischiatic nerve and the antimeres, regardless of the number of muscular branches
Suprimento arterial dos lobos torácicos do timo em cães da raça Dogue Alemão
A origem, o tipo e o nĂşmero de ramos arteriais responsáveis pelo suprimento sanguĂneo dos lobos torácicos do timo foram estudadas em 28 cĂŁes natimortos da raça Dogue AlemĂŁo. Para tanto, o sistema arterial destes animais foi preenchido com solução aquosa de Neoprene Latex “450” a 50%, corada com pigmento especĂfico e, em seguida, fixados em solução aquosa de fomaldeĂdo a 10%. Os lobos torácicos do timo foram supridos em ambos antĂmeros por ramos diretos e indiretos das artĂ©rias torácicas internas direita e esquerda e pericardicofrĂŞnicas direita e esquerda, pelos troncos costocervicais direito e esquerdo e pela artĂ©ria cervical superficial esquerda. A artĂ©ria subclávia esquerda e o tronco braquiocefálico tambĂ©m emitiram ramos diretos para o lobo torácico esquerdo do timo. ________________________________________________________________________________ ABSTRACTThe objective of this research was to identify if different kind of physical and alimentary management determine adaptative changes in morphometry of the esophagus-gastric transition epithelium. 15 sets comprehending the esophagus-gastric transition region (TEG) was used in adult horses considering undefined breed, gender and age divided in three groups according to diet and physical activity: group I – Five sets (TEG) of horses in intensive training fed with commercial ration; group II – Five sets (TEG) of horses which did not develop any intensive physical activity and fed by commercial ration; group III – Five sets (TEG) of horses kept in the grass without any extra feeding which did not develop any intensive physical activity. The esophagus-gastric transition region had its epithelium structure evaluated morphometrically where measurements were done to identify the thickness of the stratified squamous keratinized epithelium. The thickness of the grup I had as average 122.3µm, grup II 173.4µm of grup III 281.7µm. Results of stratified squamous keratinized epithelium thickness have shown the existence of statistically significant differences of group I when compared to group III
Arteries of the adrenal glands in ostriches (Struthio camelus)
The growth of rational ostrich breeding and their byproducts has attracted interest from researchers to increase the studies in this animal. Thus, basic research areas, such as morphology, become necessary to provide the applied areas with knowledge. Aiming to contribute to the knowledge on the vascular arrangements of the adrenal glands, 30 ostriches (Struthio camelus) were used, four days old, who had their arterial components marked with a 50% stained aqueous solution of Neoprene Latex ¨ 450 ¨ and fixed in a 10% diluted solution of formaldehyde. The coelomic cavity was exposed for identifying these glands, which are paired organs that are covered by loose connective tissue, symmetrically arranged in the two antimeres, laterally to the descending aorta, caudally to the lungs, and cranio-medially to the cranial lobes of the kidneys. The arterial blood supply, in both antimeres, is derived from the right and left adrenal arteries, the right and left cranial renal artery branches, and the right branches of the descending aorta. Regardless of the origin, the number of branches going to the adrenal glands ranged from one to two and one to three respectively, in the left and right antimeres
Artérias das glândulas adrenais em avestruzes (Struthio camelus)
http://dx.doi.org/10.5007/2175-7925.2012v25n1p125O crescimento da criação racional de avestruz e seus subprodutos tĂŞm despertado interesse dos pesquisadores em ampliar os estudos com esse animal. Assim, áreas de pesquisa básicas, como a morfologia, tornam-se necessárias para dar subsĂdios Ă s áreas aplicadas. Com o intuito de contribuir com o conhecimento referente aos arranjos vasculares das glândulas adrenais, utilizaram-se 30 avestruzes (Struthio camelus), de quatro dias de vida, tendo seus contingentes arteriais marcados com solução aquosa corada de Neoprene Látex “450” a 50% e fixados em solução diluĂda de formol a 10%. A cavidade celomática foi exposta para a identificação das referidas glândulas, que sĂŁo ĂłrgĂŁos pares e encontram-se recobertas por tecido conjuntivo frouxo, disposto simetricamente nos dois antĂmeros, lateralmente Ă aorta descendente, caudalmente aos pulmões e cranio-medialmente aos lobos craniais dos rins. O aporte sanguĂneo arterial, em ambos os antĂmeros, Ă© proveniente das artĂ©rias adrenais direita e esquerda, dos ramos das artĂ©rias renais craniais direita e esquerda e dos ramos diretos da aorta descendente. Independentemente da origem, os nĂşmeros de ramos destinados Ă s glândulas adrenais variaram de um a dois e de um a trĂŞs respectivamente para os antĂmeros esquerdo e direito
Origin and distribution of the ischiatic nerve in mixed-breed sheep
Current research studied, by dissection, the origin and distribution of the ischiatic nerve in 30 fetuses of mixed-breed male or female sheep (Ovis aries), obtained from abortions, stillborns and natural deaths of pregnant females on farms in the Triângulo Mineiro region, state of Minas Gerais, Brazil. Formaldehyde 10% was injected through the cannulation of descending thoracic aorta and the material was kept immersed in the solution for at least 48 hours before dissection. The ischiatic nerve originated from the ventral branch of the last lumbar spinal nerve, either from the sixth lumbar spinal nerve (L6) or from the seventh (L7), when present, and from the ventral branches of first and second sacral spinal
nerves (S1 and S2, respectively), and possibly from the ventral branch of third sacral spinal nerve (S3). The ischiatic nerve provided branches to the superficial gluteal, middle gluteal, accessory gluteal, deep gluteal, gemelli, quadratus femoris, adductor, biceps femoris, semitendinosus and semimembranosus muscles. The tibial and common peroneal nerves were the terminal branches of the ischiatic nerve, originating distally towards the greater trochanter of the femur bone. Wilcoxon’s test (0.05) showed that statistically there were no significant differences between the frequencies of the muscular branches of the ischiatic nerve and the antimeres, regardless of the number of muscular branches
Arterial supply of the thoracic lobes of the thymus in dogs of the Great Dane race.
The origins, numbers and type of arterial branches responsible for the blood supply of thoracic lobes of the thymus were studied in 28 stillborn dogs of the Great Dane, of which 18 were males and 10 were females. The arterial systems of these animals were filled with aqueous solution of Neoprene Latex “450”, 50%. After, the specimens were fixed in 10% formaldehyde aqueous solution. The lobes of the thymus were supplied by direct or indirect arterial branches coming from the right and left internal thoracic arteries, pericardiacophrenicas arteries, right and left costocervicais trunks, and left subclavian artery. The left subclavian artery and brachiocephalic trunk emitted direct branches towards the left thoracic lobe of the thymus