7 days from fertilization.
I am not sure but my biology teacher said it took 6-7 days
In humans - 9 months.
Implantation can sometimes cause a bit of spotting or bleeding, known as implantation bleeding. Implantation bleeding is a small amount of bleeding in the uterus that occurs when the egg implants into the uterus. A specific tissue, known as trophoblast, develops from the fertilized egg and it surrounds it. It is what attaches the egg to the inside of the uterus, and actually eats its way into the uterus. The trophoblast actually pulls the egg to the inside of the endometrium. Trophoblast even invades the mother's blood vessels and diverts her blood to the fertilized egg. Sometimes, this blood will leak and this causes implantation bleeding. Thus, it is possible that it can be as many as 5 to 14 days between the time of sexual intercourse and the time that the fertilized egg implants in the uterus. 14 days is a little long, it usually takes five days just for the egg to travel down the fallopian tube.
Three layers , ectoderm , mesoderm and endoderm .
At 12 weeks pregnant, your uterus is about the size of either an orange or a grapefuit. And it is also at this time that you begin developing new pregnancy hormones.
I have heard that there was the first uterus implant done in another country, and subsequently heard that they were studying implanting uteri in the U.S. The U.S. has not perfected a method of a permanent uterus implant, however. The method they are studying now includes anti-rejection drugs so that the woman the uterus is implanted to can have the uterus implant until after she gives birth, then it is removed. I am hopeful that they will continue this study, but I have heard that many people find a uterus implantation ethically "wrong", fearing that men will ask for this implant.
about a month
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Zygote vs Embryo- A zygote is the formation from the two gametes, the sex cells sperm and egg. (pronuclei). It forms in about 3 days.- An embryo has 3 main structural parts, further developed (forms in the 2nd week after pregnancy).1. Brain/spinal cord, skin, nerves2. Digestive system organs3. Heart, muscles, & skeletal systemThey both exist in the womb (uterus).This website was helpful for me understanding pregnancy: http://i.ivillage.com/first9months/babypp.swfby username: xDGoMuSiCxD (Naomi) :) I hope this helped.
Sperm have about three days to make it to the egg for fertilization before the egg passes out of the uterus and dies.
The gestation period (pregnancy) for a cheetah is about 90 to 98 days.
I am not sure but my biology teacher said it took 6-7 days
Uh. What the heck. You not know 'bout that? Duurr. Urgh. :"<
Those symptoms are not likely to be pregnancy related 5 days post ovulation, since even if the ovum was fertilized - it is very unlikely to have implanted in the uterine lining yet (or is just begun to implant) - so technically you would not yet be pregnant. While the cause of many of the symptoms of pregnancy are not well understood, they are most likely a result of hormonal changes that begin in the days after the blastocyst implants and is considered an embryo.
Once there is an embryo implanted in the uterus, hormonal changes stop the lining of the uterus from coming away as a period. Because the woman is pregnant, she does not ovulate the next month. Her cycle stops completely until she gives birth, and many women do not get another period until after they stop breastfeeding.
I think you mean 'viable' . . . If the spermatazoa are lucky enough to get into the uterus (baby bed), they are viable only for a couple of days.
DePuy and Zimmer offer many different hip implant devices of varying sizes. There is no clear answer as to which hip implant is larger. What is known is that many Zimmer and DePuy hip implant patients with Metal on Metal hip replacements have experienced hip implant failure.