Document Detail

Spatial arrangement of the heart muscle fascicles and intramyocardial connective tissue in the Spanish fighting bull (Bos taurus).
MedLine Citation:
PMID:  8014119     Owner:  NLM     Status:  MEDLINE    
The spatial arrangement of the muscle fascicles and intramyocardial connective tissue was examined in the ventricles of the heart of the Spanish fighting bull (Bos taurus). In both ventricles, the muscle fascicles of the myocardium are arranged in 3 main directions, forming 3 muscle layers within the ventricular wall. The preferentially vertical arrangement of the muscle fascicles in the superficial and deep layers at the level of the fibrous aortic rings and the base of the semilunar valve leaflets suggests that these fascicles are actively involved in valvular dynamics. After controlled digestion of myocytes and elastic fibres with NaOH, a 3-dimensional arrangement of the scaffolding of connective tissue that supports the muscle fascicles and myocytes was observed. The arrangement and structure of this scaffolding may influence the order of contraction of muscle fascicles in different layers of the ventricle. In addition, differences were observed between the connective tissue scaffolding surrounding the myocytes of the 2 ventricles; these variations were correlated with the different biomechanical properties.
D Sánchez-Quintana; V Climent; V Garcia-Martinez; M Rojo; J M Hurlé
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of anatomy     Volume:  184 ( Pt 2)     ISSN:  0021-8782     ISO Abbreviation:  J. Anat.     Publication Date:  1994 Apr 
Date Detail:
Created Date:  1994-07-28     Completed Date:  1994-07-28     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0137162     Medline TA:  J Anat     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  273-83     Citation Subset:  IM    
Department of Morphological Sciences, Faculty of Medicine, University of Extremadura, Badajoz, Spain.
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MeSH Terms
Cattle / anatomy & histology*
Connective Tissue / anatomy & histology*
Heart Ventricles / anatomy & histology*,  ultrastructure
Microscopy, Electron, Scanning
Muscles / anatomy & histology*,  ultrastructure

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