Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure
Purkinje fibers or Purkinje cardiomyocytes are part of the whole complex of the cardiac conduction system, which is today classified as specific heart muscle tissue responsible for the generation of the heart impulses. From the point of view of their distribution, structure and ultrastructural compo...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Zoology |
| Online Access: | http://dx.doi.org/10.1155/2013/293643 |
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| author | Paria Parto Mina Tadjalli S. Reza Ghazi Mohammad Ali Salamat |
| author_facet | Paria Parto Mina Tadjalli S. Reza Ghazi Mohammad Ali Salamat |
| author_sort | Paria Parto |
| collection | DOAJ |
| description | Purkinje fibers or Purkinje cardiomyocytes are part of the whole complex of the cardiac conduction system, which is today classified as specific heart muscle tissue responsible for the generation of the heart impulses. From the point of view of their distribution, structure and ultrastructural composition of the cardiac conduction system in the ostrich heart were studied by light and electron microscopy. These cells were distributed in cardiac conducting system including SA node, AV node, His bundle and branches as well as endocardium, pericardium, myocardium around the coronary arteries, moderator bands, white fibrous sheet in right atrium, and left septal attachment of AV valve. The great part of the Purkinje fiber is composed of clear, structure less sarcoplasm, and the myofibrils tend to be confined to a thin ring around the periphery of the cells. They have one or more large nuclei centrally located within the fiber. Ultrastructurally, they are easily distinguished. The main distinction feature is the lack of electron density and having a light appearance, due to the absence of organized myofibrils. P-cells usually have two nuclei with a mass of short, delicate microfilaments scattered randomly in the cytoplasm; they contain short sarcomeres and myofibrillar insertion plaque. They do not have T-tubules. |
| format | Article |
| id | doaj-art-33d12dece4a241c08ae642bed3757fcf |
| institution | Kabale University |
| issn | 1687-8477 1687-8485 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Zoology |
| spelling | doaj-art-33d12dece4a241c08ae642bed3757fcf2025-08-20T03:55:12ZengWileyInternational Journal of Zoology1687-84771687-84852013-01-01201310.1155/2013/293643293643Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the UltrastructureParia Parto0Mina Tadjalli1S. Reza Ghazi2Mohammad Ali Salamat3Biological Department, Faculty of Science, Razi University, Kermansha 6714967346, IranSchool of Veterinary Medicine, Shiraz University, Shiraz 1731-71345, IranSchool of Veterinary Medicine, Shiraz University, Shiraz 1731-71345, IranBiological Department, Faculty of Science, Razi University, Kermansha 6714967346, IranPurkinje fibers or Purkinje cardiomyocytes are part of the whole complex of the cardiac conduction system, which is today classified as specific heart muscle tissue responsible for the generation of the heart impulses. From the point of view of their distribution, structure and ultrastructural composition of the cardiac conduction system in the ostrich heart were studied by light and electron microscopy. These cells were distributed in cardiac conducting system including SA node, AV node, His bundle and branches as well as endocardium, pericardium, myocardium around the coronary arteries, moderator bands, white fibrous sheet in right atrium, and left septal attachment of AV valve. The great part of the Purkinje fiber is composed of clear, structure less sarcoplasm, and the myofibrils tend to be confined to a thin ring around the periphery of the cells. They have one or more large nuclei centrally located within the fiber. Ultrastructurally, they are easily distinguished. The main distinction feature is the lack of electron density and having a light appearance, due to the absence of organized myofibrils. P-cells usually have two nuclei with a mass of short, delicate microfilaments scattered randomly in the cytoplasm; they contain short sarcomeres and myofibrillar insertion plaque. They do not have T-tubules.http://dx.doi.org/10.1155/2013/293643 |
| spellingShingle | Paria Parto Mina Tadjalli S. Reza Ghazi Mohammad Ali Salamat Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure International Journal of Zoology |
| title | Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure |
| title_full | Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure |
| title_fullStr | Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure |
| title_full_unstemmed | Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure |
| title_short | Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure |
| title_sort | distribution and structure of purkinje fibers in the heart of ostrich struthio camelus with the special references on the ultrastructure |
| url | http://dx.doi.org/10.1155/2013/293643 |
| work_keys_str_mv | AT pariaparto distributionandstructureofpurkinjefibersintheheartofostrichstruthiocameluswiththespecialreferencesontheultrastructure AT minatadjalli distributionandstructureofpurkinjefibersintheheartofostrichstruthiocameluswiththespecialreferencesontheultrastructure AT srezaghazi distributionandstructureofpurkinjefibersintheheartofostrichstruthiocameluswiththespecialreferencesontheultrastructure AT mohammadalisalamat distributionandstructureofpurkinjefibersintheheartofostrichstruthiocameluswiththespecialreferencesontheultrastructure |