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trophoblast
Blastocyst. Each of those cells will eventually become a different part of the baby's body as they each multiply, creating muscle, bone, and organ tissues.
Inner Cell Mass
Embryonic stem cells (ES cells) are stem cells derived from the inner cell mass of the blastocyst, an early-stage embryo.In other words, they do not become embryos, they are part of an embryo.
Placenta while in utero and breasts once born.
trophoblast
The placenta is developed during pregnancy from the implantation of a blastocyst. The blastocyst creates the outer layer of the placenta. This continues to developed into two more portions and then develops an outer protective layer. The placenta grows throughout the entire pregnancy.
Blastocyst. Each of those cells will eventually become a different part of the baby's body as they each multiply, creating muscle, bone, and organ tissues.
blastocyst The most versatile stem cells occur earliest in life. As a fertilized human egg divides, it first becomes a solid ball of cells, the morula. Next, about five days after fertilization, it becomes a hollow ball, the blastocyst. The cells of the outer layer of the blastocyst eventually form part of the placenta.
blastocyst The most versatile stem cells occur earliest in life. As a fertilized human egg divides, it first becomes a solid ball of cells, the morula. Next, about five days after fertilization, it becomes a hollow ball, the blastocyst. The cells of the outer layer of the blastocyst eventually form part of the placenta.
The decidua basalis portion of the endometrium
Yes. It is part of the development of the embryo.
The placenta will be attached to the uterus, but it is not part of it. The uterus is a muscle and is part of basic female human anatomy. The placenta is an organ which is formed after conception.
Inner Cell Mass
No, tuna fish do not have placentas. The placenta is part of mammal physiology, and fish are not mammals.
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
Fruit placenta