100
The zygote is formed when two sex cells join to become haploid. It is at this stage that the zygote begins to split and make more cells. It keeps doing this for 5 days until it is called a blastocyst, which is a ball of cells. After this point, the blastocyst is called an embryo or fetus. The embro continues to make cells which eventually become specialised, like skin cells and muscle cells. It doesn't have anything to do with conservation of mass, just splitting and making thousands of new cells until the zygote becomes a baby.
Meiosis 1*2*3*4*5*6*7 = 5040
Embryonic stem cells refer to pluripotent cells that are generally derived from the inner cell mass of blastocysts (day 5). Stem cells have been derived from gonadal ridges and mesenteries (3200 to 4000) extracted from aborted five-to-nine week old human embryos.
5
Now im a doctor and there is exactly 5
About 100 cells make up a blastocyst.
A 5 day blastocyst will be 0.1 to 0.2 milleters (.003 to .005 inch) typically
Implantation of the 5-day old embryonic stage of cells, called the blastocyst occurs. The blastocyst eventually gives rise to gastrula, and further development of the fetus proceeds.
The zygote is formed when two sex cells join to become haploid. It is at this stage that the zygote begins to split and make more cells. It keeps doing this for 5 days until it is called a blastocyst, which is a ball of cells. After this point, the blastocyst is called an embryo or fetus. The embro continues to make cells which eventually become specialised, like skin cells and muscle cells. It doesn't have anything to do with conservation of mass, just splitting and making thousands of new cells until the zygote becomes a baby.
Meiosis 1*2*3*4*5*6*7 = 5040
It takes 1-3 days for a egg to get fertilized and then it's called a zygote. It then takes 3-5 days until the zygote enters the uterus. In the uterus, the cells continue to divide and becomes blastocyst which attaches to the lining of the uterus. This is called implantation and is completed by day 9-10. The next step it's a embryo.
Hmmm................... About what 5 to 6 trillion cells
5
1 billion
Embryonic stem cells refer to pluripotent cells that are generally derived from the inner cell mass of blastocysts (day 5). Stem cells have been derived from gonadal ridges and mesenteries (3200 to 4000) extracted from aborted five-to-nine week old human embryos.
Millions apon millions. Too many to count.
5