Document Detail


Anatomy of the heart in the North American beaver (Castor canadensis).
MedLine Citation:
PMID:  7103113     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The gross anatomy of the heart of the North American beaver (Castor canadensis) is described following the dissection of nine specimens of both sexes ranging in body weight from 10 to 26 kg. The general characteristics of the beaver heart are similar to those of other mammals. However, variations in details of anatomy exist, especially for the right atrium. The right auricle is divided into 2 appendages, one on each side of the ascending aorta. The orifices of the 3 venae cavae are guarded by a well developed valvular system. Other variations in relative size and shape exist and for these points the heart of the beaver is more closely related to that of aquatic than to that of terrestrial mammals. The heart has the form of a widened cone being transversely broad and flat from one surface to the other. The apex of the organ is formed by both ventricles except in 2 specimens in which only the left ventricle participates in its formation. The right ventricle in the beaver being relatively long and narrow, its general proportions approximate those found in the seals.
Authors:
A Bisaillon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Anatomischer Anzeiger     Volume:  151     ISSN:  0003-2786     ISO Abbreviation:  Anat Anz     Publication Date:  1982  
Date Detail:
Created Date:  1982-09-17     Completed Date:  1982-09-17     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0370541     Medline TA:  Anat Anz     Country:  GERMANY, EAST    
Other Details:
Languages:  eng     Pagination:  381-91     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Heart / anatomy & histology*
Heart Atria / anatomy & histology
Heart Ventricles / anatomy & histology
Male
Rodentia / anatomy & histology*

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


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