Results (
Vietnamese) 1:
[Copy]Copied!
The placenta develops from both fetal (chorion) and maternal (decidua basalis) tissues. This allows the exchange of nutrients and waste between the fetal and maternal circulations.
The placenta is composed of 15 to 20 regions called cotyledons. This specimen is a portion of a cotyledon from late pregnancy.
Villi - projections of the fetal chorion that extend into lacunae in which maternal blood flows. Exchange between the two circulations occurs through the villus wall.
Simple Cuboidal Epithelium - consists of two types of cells:
Cytotrophoblasts - cuboidal cells with pale staining cytoplasm and euchromatic nuclei. They are absent by mid to late pregnancy so are not seen in this specimen.
Syncytiotrophoblasts - multinucleated cuboidal cells with microvilli.
Stroma - mesenchymal connective tissue forms the core of villi and contains fetal capillaries and venules.
Placental Arteries - develop from arteries in the endometrium to supply maternal blood to the lucanae.
Basal Plate (Stratum Basale) - the part of the uterus to which chorionic villi are anchored. This specimen contains only a portion of the basal plate.
Decidual Cells - clusters of large round or oval cells.
Fetal and maternal blood do not mix in the placenta.
Being translated, please wait..
