What is embroblast?

What is the term used for new human life after fertilization?

embryo You go from ovum (egg) + sperm and get a zygote. A single fertilized cell. This divides rapidly forming a blastocyst. The blastocyst has a few parts even though it is a tiny ball of cells. One part will eventually form the placenta and the other part, called the embroblast. At this point the baby-to-be has not implanted, that is, it has not reached the uterine cell wall to initiate pregnancy. The cell could easily die on it's own at this stage, the mother-to-be is not considered pregnant either. Her body is not yet hosting or contributing anything to the growth of the blastocyst. When the blastocyst implants it will grow a placenta that gets nutrients from the (now pregnant) mother and uses her blood stream to eliminate waste. Now we have an embryo. The term embryo can be used to describe this whole period from first fertilization to eight weeks of pregnancy. But, the moment of implantation is just so important to the whole process that I think the distinction should be made. After eight weeks of pregnancy you have a fetus and after birth you will have an infant/newborn/baby. Hope this helps, D