Product information “Model of Placenta & Umbilical Cord” The amniotic membrane allows you to show the fetal model inside the sac. The snap-on umbilical cord clearly shows the vein and arteries and a convenient drawstring closes the sac. Both amniotic and chorionic membranes are detailed accurately in two colors. Fits to model R10070. Related links to “Model of Placenta & Umbilical Cord” Do you have any questions concerning this product? Further products by Erler-Zimmer