Document Detail

Does the human placenta differentiate structurally during the 10th lunar month?
MedLine Citation:
PMID:  7532047     Owner:  NLM     Status:  MEDLINE    
The placenta is the central organ of fetomaternal exchange, which metabolically provides for the growth of the fetus and its membranes as a whole. The main structural components of the human placenta develop until the beginning of the second trimester of gestation, and continue to grow and differentiate. The dynamics of the histomorphological development of the placenta lasts until birth. The aim of this stereological investigation was to analyze and compare structural components of placental parenchyma during two periods of the 10th lunar month: from the 38th to 39th week, and in the 40th week of gestation. The results show that during the last four weeks of gestation the trophoblast of the chorionic villi changes the most. At the beginning of the 10th lunar month, alpha zones, bearers of transplacental gas transport, prevail. At the end of the 10th lunar month beta zones dominate (P < 0.005). These are metabolically active parts of trophoblast. These quantitative results of stereological analysis have to be assumed as structural evidence of the physiological maturity of human placenta.
D Grbesa; B D Zivković
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta medica Croatica : c̆asopis Hravatske akademije medicinskih znanosti     Volume:  48     ISSN:  1330-0164     ISO Abbreviation:  Acta Med Croatica     Publication Date:  1994  
Date Detail:
Created Date:  1995-03-23     Completed Date:  1995-03-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9208249     Medline TA:  Acta Med Croatica     Country:  CROATIA    
Other Details:
Languages:  eng     Pagination:  117-21     Citation Subset:  IM    
Department of Histology and Embryology, School of Medicine, University of Zagreb.
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MeSH Terms
Birth Weight
Placenta / anatomy & histology*
Pregnancy Trimester, Third

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