Document Detail


Macroscopic anatomy of the heart of the ringed seal (Phoca hispida).
MedLine Citation:
PMID:  18197897     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Anatomical properties of the ringed seal (Phoca hispida) heart and associated blood vessels reveal adaptations related to requirements for diving. Seven adult ringed seals were embalmed and dissected to document the gross anatomical features of the heart. Computed tomography images of the thoracic cavity were taken on one seal prior to dissection. The shape and position of the heart is different from the typical carnivore heart. The most notable difference is its dorsoventral flattened appearance with its right and left sides positioned, respectively, within the thoracic cavity. The long axis of the heart is positioned horizontally, parallel to the sternum. The right ventricle is spacious with thin walls which extend caudally to the apex of the heart such that the apex is comprised of both right and left ventricles. The cusps of the left atrioventricular valve of the ringed seal heart resemble an uninterrupted, circular curtain making it challenging to distinguish the divisions into parietal and septal cusps.
Authors:
H Smodlaka; R W Henry; J Schumacher; R B Reed
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Anatomia, histologia, embryologia     Volume:  37     ISSN:  0340-2096     ISO Abbreviation:  Anat Histol Embryol     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-01-16     Completed Date:  2008-03-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7704218     Medline TA:  Anat Histol Embryol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  30-5     Citation Subset:  IM    
Affiliation:
College of Veterinary Medicine, Western University of Health Sciences, 309 East Second Street, Pomona, CA 91766-1854, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Coronary Vessels / anatomy & histology*
Diving / physiology
Heart / anatomy & histology*
Heart Atria / anatomy & histology*
Heart Ventricles / anatomy & histology*
Phoca / anatomy & histology*
Tomography, X-Ray Computed

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


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