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1- Department of Basic Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
2- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran.
Abstract:   (68 Views)
Objectives: The purpose of this study was to describe the anatomic appearance of great cardiac vessels in Egyptian fruit bat (Rousettus aegyptiacus) as a widespread bat in the southern region of Iran.
Methods: Five Egyptian fruit bats with a body mass of 123.04±0.08 g were used.
Results: The aortic arch (transverse arch) cranial to the heart gives rise to right and left brachiocephalic (innominate) arteries, each of which immediately divides into common carotid and subclavian arteries. The aortic arch continues caudally on the dorsal side of the heart, inclines to the left of the median plane as the dorsal aorta. A ligamentum arteriosum connecting the dorsal aorta to the pulmonary trunk is seen a few millimeters caudal to the origin of the left brachiocephalic artery. The arrangement of the great veins in being two anterior venae cavae resembles that found in birds rather than in mammals. A left azygos vein entered dorsally to join the left anterior vena cava. The opening of the right anterior vena cava is in the dorsal part of the right atrium; the opening of the left anterior vena cava in common with the coronary sinus is at the caudal part of the right atrium. The posterior vena cava opens into the right atrium dorsal and cranial to the entrance of the left anterior vena cava.
Conclusion: In conclusion, the evolution in the above-mentioned morphology is in accordance with flight requirements of bats.
Full-Text [PDF 1293 kb]   (26 Downloads)    
Type of Study: Original | Subject: Gross Anatomy
Received: 2021/06/24 | Accepted: 2021/10/3

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