La superficie intervellosa de la placa basal de la placenta humana: Estudio con el microscopio electrónico de barrido

objective: to apply the scanning electron microscopy stain to the intervillous surface of the basal plate of the human placenta at 38 weeks of pregnancy, obtained by cesarean, in a pacient of 24 years old, apparently normal. method: specimens from basal plate were obtained immediately after labor, washed in phosphate buffer at ph 7.3 and fixed by immersion in 2% glutaraldehyde at the same buffer to be processed with the conventional stains of scanning electron microscopy. sitting: laboratory of electron microscopy, ciadana, faculty of health sciences, maracay, aragua. results: a smooth surface in some regions and with numerous folds of the syncytium was observed. in another regions, erythrocytes, cells of basal plate, and the morphological three-dimensional aspect of the interaction of anchoring villi with the syncytium were noted. conclusion: this new three-dimensional vision exhibits the throphoblastic intervillous surface and their interaction with anchoring villi which is of interest for the understanding of placental detachment.