DESCRIÇÕES ANATÔMICAS DO CORAÇÃO E VASOS DA BASE DE Procyon cancrivorus (CUVIER, 1798)

Pereira, Kleber Fernando; Terra, Daiane Rodrigues de Souza; Ferreira, L. S.; Sabec-Pereira, Dayane Kelly; Lima, Fabiano Campos; Santos, Odeony Paulo dos

doi:10.4025/arqmudi.v20i3.34343

Cited by 5 publications

(22 citation statements)

References 6 publications

(11 reference statements)

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“…The same placement and number of atrium ventricular valves has also been described for dogs and cats, S paella , and T tetradactyla . The internal structures identified in the heart of the common marmoset specimens were similar to that described for other species such as dogs and cats, P cancrivorus , and Agouti paca …”

Section: Discussionsupporting

confidence: 72%

“…The presence of two venae cavae, cranial and caudal, differed from that found for the Agouti paca where left cranial vena cava and right cranial vena cava were described, in addition to the caudal vena cava, but the findings for the common marmoset were in line with the description for other species, including domestic species, T tetradactyla , and Procyon cancrivorus …”

Section: Discussionmentioning

confidence: 47%

“…The presence of two venae cavae, cranial and caudal, differed from that found for the Agouti paca 9 where left cranial vena cava and right cranial vena cava were described, in addition to the caudal vena cava, but the findings for the common marmoset were in line with the description for other species, including domestic species, 10 T tetradactyla, 8 and Procyon cancrivorus. 11 The distribution pattern of the aortic arch branches in C jacchus is the same as that described for humans, 12 emphasizing the fact that these individuals are excellent models for study to understand the phylogenetic process of such structures, comparing their morphology to human primates. This same branching has been described in other non-human primate species, such as S apella 7 and a female Saguinus niger.…”

Section: Heart Anatomymentioning

confidence: 82%

“…This same branching has been described in other non-human primate species, such as S apella 7 and a female Saguinus niger. 13 When compared with the descriptions in mammal species belonging to other groups, and not the primate group, (Leopardus pardalis, 14 P cancrivorus, 11 and Cerdocyon thous 6 ), difference was found in the branching.…”

Section: Heart Anatomymentioning

confidence: 94%

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Heart anatomy and topography of the common marmoset (Callithrix jacchus Linnaeus, 1758)

Falcão

Souza

Salles

et al. 2020

J of Medical Primatology

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Introduction The morphological study of wild animals serves as a base for more advanced studies in clinical medicine, surgery, and pathology. Due to an urgent need and demand for professionals specialized in this area, studies of this nature have become indispensable and so the objective of the present study was to describe the heart morphology of Callithrix jacchus. Methods Ten anatomic pieces of common marmoset were used. The hearts were removed and dissected for better visualization and thus to makes a detailed description of the structures of the organ of the C jacchus species. Results The C jacchus heart is similar to that of other mammals, with small anatomical modifications such as division of the apex by the interventricular grooves, shallow fossa ovalis, and less salient intervenous tubercle. Conclusions This study may serve as taxonomic base for research and also as a basis for clinical and surgical procedures with the C jacchus.

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 47%

Section: Heart Anatomymentioning

confidence: 82%

Section: Heart Anatomymentioning

confidence: 94%

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Heart anatomy and topography of the common marmoset (Callithrix jacchus Linnaeus, 1758)

Falcão

Souza

Salles

et al. 2020

J of Medical Primatology

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“…Com base nas características internas do coração, pôde-se notar em Bradypus variegatus a presença dos átrios e ventrículos, separados por septos, assim como evidenciado para mamíferos domésticos e silvestres [12,27,29]. Os átrios apresentam-se internamente, praticamente lisos corroborando com os estudos no avestruz (Struthio camelus) [36], na paca (Agouti paca) [3] e no mão-pelada (Procyon cancrivorus) [27].…”

Section: Discussionunclassified

Internal Macroscopic Anatomy and Electrical Evaluation of the Bradypus variegatus Heart

Albuquerque

Ferri

Braz

et al. 2021

Acta Scientiae. Vet.

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Background: The Bradypus variegatus species presents peculiar anatomophysiological properties and many aspects of its organic systems still need to be clarified, especially regarding the cardiovascular system, given its participation in vital activities. Disorderly anthropic action has had drastic consequences in sloth populations and the need to treat sick and injured animals is increasingly common. To this end, the importance of knowing its characteristics is emphasized. Therefore, this study proposed to describe the internal macroscopic structures of the sloth's heart, as well as to measure the ventricular walls and indicate the electrical activity of the organ.Materials, Methods and Results: For the dissections, 15 Bradypus variegatus cadavers were used (1 young female, 9 adults females and 5 adult males) belonging to the Área de Anatomia of the Departamento de Morfologia e Fisiologia Animal (DMFA), Universidade Federal Rural de Pernambuco (UFRPE), Recide, PE, Brazil. After they were fixed and preserved, the specimens received a midsagittal incision in the chest, followed by soft tissue folding and removal of ribs to access the heart. The organ was derived from the cavity and sectioned sagittal medially to identify its internal anatomy. Ventricular walls and interventricular septum were measured with a steel caliper (150 mm / 0.02 mm). An electrocardiogram was performed to determine the electrical profile on 5 healthy B. variegatus sloths, living under semi-livestock conditions at the Recife Zoo, PE, Brazil. The electrodes were taken from the regions, scapular and glutes of the animals that were called hugging a keeper during the procedure, carried out in the Zoo itself, using a portable device. Based on the data obtained, sloths have cardiac chambers separated by septa, however between atria and ventricles, in both antimeres, there are atrioventricular ostia, where valves are found, consisting of 3 valves on the right and 2 on the left. The atria are practically smooth inside and have their cavity enlarged by the atria, the right being larger than the left, these having a greater amount of pectineal muscles in relation to the atria. The ventricles have trabeculae and papillary muscles, 3 on the right and 2 on the left. These muscles hold the tendinous chords that connect the valves. The existence of trabeculae marginal septum was not evidenced. The thickness of the wall of the left ventricle, as well as that of the interventricular septum, proved to be greater than the thickness of the wall of the right ventricle, regardless of the age or sex of the animals. Based on the electrocardiographic recordings, the sloths presented sinus rhythm, with a heart rate between 67 and 100 bpm. The electrical axis ranged from -60º to -90º. The P wave is smoother than the QRS complex. While the S-T segment was classified as isoelectric. The T wave was shown to be + and predominantly > or = at 25% of the S wave, which characterized an rS type QRS deflection in both females and males.Discussion: The general characteristics of the cardiac chambers in sloths are similar to those observed in other domestic and wild mammals. However, the presence of pectineal muscles associated with the atria and auricles differs from that observed in mammals such as the paca and raccoon and in birds such as the ostrich, which have trabecular structures in these cavities. The number of valves in sloths is equal to the anteater. However, it has a marginal trabeculae septum, not seen in Bradypus variegatus. According to the electrocardiographic findings, the rhythm was sinus, but much lower than that observed in the capuchin monkey, which also maintains arboreal habits. Keywords: Xenarthra, common sloth, internal anatomy, heart, electrocardiogram.Descritores: Xenarthra, preguiça-comum, anatomia interna, coração, eletrocardiograma.

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Anomalous origin of the right subclavian artery in a Neotropical otter (Lontra longicaudis, Olfers—1818)

Vélez García

2024

Anat Histol Embryol

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The Neotropical otter (Lontra longicaudis) is a mustelid distributed geographically from Mexico to Argentina. Anomalous origins of the aortic arch branches are rarely reported in wild carnivorans. Therefore, this study aimed to report the anomalous branching of the aortic arch in one formaldehyde‐fixed specimen of L. longicaudis. The aortic arch provided three branches: the bicarotid trunk and the left and right subclavian arteries. The latter passed dorsally to the esophagus toward the right side without a mark of compression at the esophagus. This is the first report of an anomalous origin of the right subclavian artery in L. longicaudis.

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DESCRIÇÕES ANATÔMICAS DO CORAÇÃO E VASOS DA BASE DE Procyon cancrivorus (CUVIER, 1798)

Cited by 5 publications

References 6 publications

Heart anatomy and topography of the common marmoset (Callithrix jacchus Linnaeus, 1758)

Heart anatomy and topography of the common marmoset (Callithrix jacchus Linnaeus, 1758)

Internal Macroscopic Anatomy and Electrical Evaluation of the Bradypus variegatus Heart

Anomalous origin of the right subclavian artery in a Neotropical otter (Lontra longicaudis, Olfers—1818)

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