Anatomical studies of the coronary system in elasmobranchs: I. Coronary arteries in lamnoid sharks
Abstract A study of the anatomy of coronary arteries has been done in five shark species of the order Lamniformes: Isurus oxyrinchus, Isurus paucus, Lamna nasus, Alopias superciliosus , and Alopias vulpinus . The study, which included 26 specimens, was carried out with the injection‐corrosion techni...
| Published in: | American Journal of Anatomy |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1990
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1002/aja.1001870309 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faja.1001870309 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aja.1001870309 |
| Summary: | Abstract A study of the anatomy of coronary arteries has been done in five shark species of the order Lamniformes: Isurus oxyrinchus, Isurus paucus, Lamna nasus, Alopias superciliosus , and Alopias vulpinus . The study, which included 26 specimens, was carried out with the injection‐corrosion technique, obtaining internal casts of the main trunks and coronary arterial branches. The results have shown a high degree of constancy in the coronary patterns in all species and a number of general features common to all of them, except for Alopias vulpinus . In this species, a mesh‐like ventricular pattern of intramyocardial vessels was found instead of subepicardial ventricular coronary branches with a definite patern. It was also shown that there is a wide range of variation among the species regarding the relative importance of the dorsal and ventral coronary trunks. Thus, Isurus oxyrinchus showed a clear predominance of the ventral coronary trunk, whereas in Alopias superciliosus , most of the ventricle was supplied by branches derived from the dorsal coronary trunk. |
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