Morphology of the cardiovascular system in greater rhea (Rhea americana americana Linnaeus, 1758)

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چکیده

Greater rheas have been the subject of scientific studies in various areas veterinary and biology order to obtain essential information for their captivity management. The aim this study was describe morphology greater rhea heart. 20 animals were incised sagittal plane, then fixed 3.7% formaldehyde dissected after 72 h. In addition, samples from cardiovascular system collected, processed hematoxylin-eosin Gomori Trichrome Staining. heart is conical shape, dark red when fresh located between hepatic lobes. It has two atria ventricles, four valves (left right atrioventricular, aortic pulmonary). aorta pulmonary trunk emerge at base, while ostia cranial caudal vena cava emerged atrium left veins coronary vein atrium. From artery, arteries arose, which originated, respectively, superficial conal branches profuse, ventricular branches, being responsible irrigation Microscopically constituted by simple pavement epithelium, rich loose connective tissue. composed intima, middle adventitial tunics. Thus, it concluded that morphological findings resemble those described other birds such as ostrich Gallus gallus domesticus.

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ژورنال

عنوان ژورنال: Medicina Veterinaria-recife

سال: 2021

ISSN: ['2675-6617', '1809-4678']

DOI: https://doi.org/10.26605/medvet-v15n3-3582