Document Detail


Contribution of the superior atrioventricular cushion to the left ventricular infundibulum. Experimental study on the chick embryo.
MedLine Citation:
PMID:  6720242     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The role of the superior atrioventricular cushion in the normal development of the left ventricular infundibulum was experimentally studied in the chick embryo. 178 embryos at stages 19-24 of Hamburger and Hamilton were selectively labeled using gelatin-india ink; afterward embryos were reincubated until the mature heart stage, in which the final location of the labels was determined. In addition, anatomical microscopic studies were carried out on the chick embryo heart at different stages of the development. 91 embryos were obtained at the mature heart stage, 46 of which were normal. In 82,6% of these 46 embryos labels were found in the left ventricular infundibulum and were distributed in the following regions: (1) base of the free portion of the anteroseptal mitral leaflet (mitroaortic continuity); (2) the same region plus the left surface of the anterior basal portion of the ventricular septum, and (3) the left surface of the anterior basal portion of the ventricular septum. Anatomical microscopic studies showed that the superior atrioventricular cushion appears at stage 18, fusing with the inferior cushion at stage 28. Our results permit us to conclude that the superior atrioventricular cushion plays an important role in the normal development of the left ventricular infundibulum, and it contributes in the posterolateral and anteromedial wall formation.
Authors:
I García-Peláez; G Díaz-Góngora; M A Martínez
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta anatomica     Volume:  118     ISSN:  0001-5180     ISO Abbreviation:  Acta Anat (Basel)     Publication Date:  1984  
Date Detail:
Created Date:  1984-06-11     Completed Date:  1984-06-11     Revised Date:  2007-07-02    
Medline Journal Info:
Nlm Unique ID:  0370272     Medline TA:  Acta Anat (Basel)     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  224-30     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Chick Embryo
Heart / anatomy & histology,  embryology*
Heart Septum / anatomy & histology,  embryology
Heart Ventricles / anatomy & histology,  embryology

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