Document Detail

The morphology and distribution of the tendinous chords and their relation to the papillary muscles in the tricuspid valve of the human heart.
MedLine Citation:
PMID:  18058754     Owner:  NLM     Status:  MEDLINE    
The tendinous chords of the tricuspid valve are the predominant type of connection between the papillary muscles and the tricuspid valve. Studies describing the evolutionary line of these connections are well known. The flexibility of particular leaflets of the tricuspid valve varies, as does the tension of the blood stream in particular cusps. The present study was performed on a group of 96 formalin-fixed adult human hearts, which ranged in age from 18 to 90 years and gave no evidence of congenital malformations or pathological changes. The valves were divided into five types according to earlier studies and analysis was made in terms of these types. The tendinous chords and their ramifications were counted. The surfaces of particular leaflets were measured. The ratio of marginal to ventricular leaflets was counted for each type of leaflet in particular types of valves. The parts of the main leaflets supported by specific papillary muscles were counted for types 1, 2 and 3. The number of tendinous chords decreased in leaflets in particular types of tricuspid valve, but the ratio of chords attached to the margins and ventricular surfaces was similar. The number of chords for the surface of leaflets (measured in mm2) was similar in particular types of valve for all cusps. The most differentiated were commissural chords in all types of valve. The ratio of chords attached to the margins and ventricular surfaces does not depend on the surface area of the leaflets.
M Skwarek; J Hreczecha; M Dudziak; J Jerzemowski; M Grzybiak
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Folia morphologica     Volume:  66     ISSN:  0015-5659     ISO Abbreviation:  Folia Morphol. (Warsz)     Publication Date:  2007 Nov 
Date Detail:
Created Date:  2007-12-06     Completed Date:  2008-05-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374620     Medline TA:  Folia Morphol (Warsz)     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  314-22     Citation Subset:  IM    
Department of Sports Medicine and Hygiene, the Jedrzej Sniadecki Academy of Physical Education and Sport, Gdańsk, Poland.
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MeSH Terms
Aged, 80 and over
Chordae Tendineae / abnormalities,  anatomy & histology*
Heart Atria / anatomy & histology
Heart Ventricles / anatomy & histology*
Middle Aged
Papillary Muscles / anatomy & histology*
Tricuspid Valve / anatomy & histology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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