The Placenta/Cord/Amnion/Chorion Model allows our Fetal Model (sold separately) to be shown inside a simulated amniotic sac. The snap-on cord clearly reveals the vein and arteries, and a convenient drawstring closes the sac. The amniotic and chorionic membranes are accurately detailed in two colors. The placenta measures 7″ x 8″. Fetal Model sold separately.