Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure
Joint Authors
Parto, Paria
Tadjalli, Mina
Salamat, Mohammad Ali
Ghazi, S. Reza
Source
International Journal of Zoology
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-08-27
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Parto, Paria& Tadjalli, Mina& Ghazi, S. Reza& Salamat, Mohammad Ali. 2013. Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure. International Journal of Zoology،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-461059
Modern Language Association (MLA)
Parto, Paria…[et al.]. Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure. International Journal of Zoology No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-461059
American Medical Association (AMA)
Parto, Paria& Tadjalli, Mina& Ghazi, S. Reza& Salamat, Mohammad Ali. Distribution and Structure of Purkinje Fibers in the Heart of Ostrich (Struthio camelus) with the Special References on the Ultrastructure. International Journal of Zoology. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-461059
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461059