Ramos colaterais parietais e terminais da aorta abdominal em Myocastor coypus (nutria)

Culau, Paulete de Oliveira Vargas; Azambuja, Rodrigo Cavalcanti de; Campos, Rui

doi:10.1590/s0103-84782008000400014

Cited by 14 publications

(26 citation statements)

References 2 publications

(1 reference statement)

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“…These characteristics follow the topographic location described in other wild mammals such as rodents Lagostomus maximus (RIBES, 1999), Myocastor coypus (MACHADO et al, 2002;CULAU et al, 2008), Dasyprocta agouti (NEVES et al, 2007), Cavia porcellus (COOPER; SCHILLER, 1975) and Galea spixii (SANTOS et al, 2016), and domestic animals such as dogs, cats and horses (REECE et al, 2005). Morphology of the adrenal glands… SANTOS, A. C. et al…”

Section: Discussionsupporting

confidence: 68%

Morphology of the adrenal glands of giant anteater (Myrmecophaga tridactyla, Linnaeus, 1758) of wild life

et al. 2016

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ABSTRACT:The Myrmecophaga tridactyla (family Pilosa), popularly known in Brazil as the giant anteater is classified as an endangered species by the main survey agencies of biodiversity preservation around the world. The adrenal glands are important organs, which are related to homeostasis of the animal. This study aimed to describe the morphology of the adrenal glands of M. tridactyla, providing data for future studies related to the production of steroid hormones in specimens exposed to different stress factors. The adrenal glands of 14 specimens were used. The glands were measured, photodocumented and described by light microscopy. The adrenals were positioned in the cranial extremity of the kidneys (left and right) and related medially to the caudal vena cava. The right adrenal gland had an elongated shape while the left adrenal gland had pyramidal or triangular shape. The weight was 4.765±0.129g for the right adrenal and 3.975±0.213g for the left adrenal. The length was 4.50±0.14cm for the right adrenal and 4.28±0.11cm for the left adrenal. The width was 2.60±0.13cm for the right adrenal and 2.37±0.12cm for the left adrenal. The thickness was 0.45±0.11cm for the right adrenal and 0.68±0.14cm for the left adrenal. Statistical differences (p<0.05) between right and left adrenals for all values analyzed were observed. Microscopically it was observed a capsule composed by modeled dense connective tissue lining the organ. Below this capsule, from the outermost to the innermost layer, it was observed a cortical region divided into glomerular, fasciculata and reticular zones with a medullar region occupying the center of the organ. Further studies related to steroidogenesis with specimens collected at different periods of the year are necessary, aiming to observe if there are morphological or hormonal variations in the adrenal glands due to seasonal periods. This information would be of great importance because it could reflect the behavioral habits of this species.

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Section: Discussionsupporting

confidence: 68%

Morphology of the adrenal glands of giant anteater (Myrmecophaga tridactyla, Linnaeus, 1758) of wild life

et al. 2016

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“…In nutrias, a double renal artery was observed in the kidneys of 3.3% of animals, both right and left (Culau et al, 2008). In the year prior to this study, some researchers observed that in all animals asymmetry was observed at the place of origin of the renal arteries, and the right cranial vessel was always more cranial than the left.…”

Section: Discussionmentioning

confidence: 56%

Morphometry and Vascularization of the Rabbit Kidneys (Oryctolagus cuniculus)

et al. 2015

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SUMMARY: Rabbits have been used as urologic models in many studies. The aim of this study was to characterize the renal morphology and anatomical variations of the renal pedicle in rabbit. The research ethics committee of Rio de Janeiro Federal Rural University approved this study. The animals were obtained from the university's necropsy unit. Dissections were performed in 50 adult rabbits, male and females, without macroscopic renal pathology. Kidney measurements were made with a digital caliper: length, width, and thickness. The length and origin of the renal arteries and main branches and length of the renal veins were also determined. The terminology of Nomina Anatomica Veterinaria was followed. The mean and standard deviation of the length of the right kidney was 3.150±0.2588 cm in males and 3.127±0.3769 cm in females and in the left kidney was 3.083±0.0818 cm in males and 3.162±0.0848 cm in females. The width of the right kidney was 1.933±0.0848 cm in males and 1.996±0.0680 cm in females and in the left kidney was 1.850±0.0659 cm in males and 2.004±0.0940 cm in females. There was no significant difference in the measurements between the two sexes and antimeres and in the measures of renal vessels in relation to sex, but the left artery and renal vein were always larger than the right in both sexes. The results of the present study are expected to contribute to the body of knowledge in the field of comparative and applied anatomy.

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“…To guarantee the oxygen and glucose supply, the arteries derived from the celiac trunk and the cranial mesenteric are emphasized to provide nutrition to the stomach, spleen, pancreas and the anterior and middle intestines (Grassé, 1955;Moore & Persaud, 2008). Some of these vessels were described in rodents and chelonians (Rodrigues et al, 2003;Culau et al, 2008). Studies on digestive tract morphology in Xenarthra refer to the morphology and vascularization of these structures without specifying aspects of the origin, route, destination or domain territory of the arteries destined for gastric compartments (Britton, 1941;Grassé, 1955;Langer, 1984;Foley et al, 1995;Diz et al, 2006;Souza et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Morphology and Vascularization of the Gastric Compartments in Three-Toed Sloth (Bradypus torquatus Illiger, 1811)

Rezende¹,

Monteiro²,

Carvalho³

et al. 2011

Int. J. Morphol.

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SUMMARY:The macroscopic anatomy and vascularization of the stomach compartments of Bradypus torquatus were examined in five animals from the University of São Paulo College of Veterinary Medicine and Zootechny collection. The method included aqueous perfusion of the arterial network, colored latex injection, fixation in formaldehyde (10%) and preservation in Laskovisk solution. Dissections were performed under mesoscopic light and photo documentations were performed for description and data analysis. In these animals, the largest abdominal organ was the stomach, which internally presented the cardiac, fundic and prepyloric regions, subdivided in six compartments (cardiac right, middle and left; fundic; pre-pyloric I and II). The stomach was irrigated by the left gastric and celiac arteries, which are ventral visceral branches of the abdominal aorta. These arteries emerged in the retroperitoneal region and reached the viscera through the mesogastric region, distributed in the large and small stomach curvatures, in the spleen and the pancreas. The primary collateral branches of the left gastric artery are directed to the large stomach curvature, and the celiac artery irrigated the spleen, the pancreas and the small stomach curvature. The vascular pattern differed in some aspects from that observed in the other multicavity stomachs of recent vertebrates.

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Ramos colaterais parietais e terminais da aorta abdominal em Myocastor coypus (nutria)

Cited by 14 publications

References 2 publications

Morphology of the adrenal glands of giant anteater (Myrmecophaga tridactyla, Linnaeus, 1758) of wild life

Morphology of the adrenal glands of giant anteater (Myrmecophaga tridactyla, Linnaeus, 1758) of wild life

Morphometry and Vascularization of the Rabbit Kidneys (Oryctolagus cuniculus)

Morphology and Vascularization of the Gastric Compartments in Three-Toed Sloth (Bradypus torquatus Illiger, 1811)

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