<prompt> Fetal placenta derived from which layer:ZonabasalisZona capsularisZona parietalisd. Inner cell mass  <response>: Ans-A Zona basalisRef: D.C. Dutta 8th ed. 32SAILENT FEATURE OF PLACENTA Wt-500gm Wt of placenta: wt of fetus 1: 6 Human placenta is discoidaldisc shape and deciduateshed off during delivery, hemochoroidal in contact with maternal blood Formed at decidua basalis Formed by trophoblast. Placental circulation established at 21-22nddaysame time heart is formed, hence fetal circulation is established. 