Naslov
Structural changes of human placental terminal villi during the tenth month of pregnancy

Autori
Grbeša, Đurđica ; Durst-Živković, Bosiljka

Izvornik
Gynaecologia et perinatologia : journal for gynaecology, perinatology, reproductive medicine and ultrasonic diagnostics (1330-0091) 3 (1994), 1; 27-29

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
human placenta; trophoblast; stereological analysis

Sažetak
The placenta continuously changes its weight, structure and function during gestation. The placental barrier, the fundamental structure for the feto-maternal exchange is formed during the last quarter of gestation showing a structural differentiation till birth. The aim of this research was to analyse the placental parenchyma stereologically and compare the size of surfaces engaged in the fetomaternal exchange during the two periods of the 10th lunar month: from the 38th to the 39th week and in the 40th week of gestation.It is stated that the surface density of the trophoblast (P<0.025) and its specially differentiated areas alpha zones (P<0.05) are significantly higher at the beginning of the 10th lunar month than in the 40th week. The mean arithmetic thickness of the terminal villous trophoblast increased from 4.75 micrometers at the beginning of the 10th lunar month to 5.95 micrometers in the 40th week (P<0.005). These quantitative results demonstrate a possibly diminished gas diffusion in the 40th week as compared with the beginning of the 10th lunar month.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti

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