| A | B |
|---|
| Fertilization | joining of sperm and oocyte |
| Zygote | fertilized oocyte |
| Fraternal twins | More than one oocyte fertilized by different sperm |
| Identical twins | one oocyte fertilized before splitting |
| Cleavage | stage of cell division without cell growth |
| Morphogenesis | Change in shape and form of cells |
| Differentiation | cell specialization |
| Morula | group of Pluripotent cells |
| Blastocyst | a stage in embryonic development in which a hollow ball is formed containing the inner cell mass surrounded by Trophoblast cells |
| Amnion | Extra-embryonic Membrane forms a fluid filled sac which surrounds the embryo. |
| Yolk sac | Source of assorted cells for organ development |
| Chorion | Makes human chorionic gonadotropin and forms part of the placenta |
| Placenta | made from embryonic and maternal tissue and which filters nutrients and waste and antibodies for the fetus without mixing mother and fetal circulations |
| Cesarean delivery | Surgical delivery of baby |
| Totipotent | can develop into any cell type |
| Pluripotent | can development into most types of tissues |
| Multipotent | can development into some types of tissues |
| In Vitro Fertilization | the formation of a zygote outside the body |
| Inner cell mass | the source of Pluripotent stem cells |
| Trophoblast | the source of extraembryonic tissues |
| iPSC | induce Pluripotent stem cells |
| Adult stem cells | derived from tissues after embryo is fully formed and are Multipotent |
| Embryonic stem cells | derived from inner cell mass of a blastocyst and are Pluripotent |
| allanotis | helps form blood vessels of umbilical cord |
