0
The human embryo come to be called a fetus by the end of the 9th week of development because all the groundwork has been completed by the 8th week.
A&P II student of Judith Miller
South University, Montgomery, AL
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What percentage of its chromosomes does a sperm cell contribute to a new embryo?
In a human, 23 chromosomes (formally known as the diploid number) - half the total in an embryo. The other half come from the egg.
How long can frozen embryos be kept for?
No one knows what the maximum storage period might be. Procedures for human embryo freezing were developed in 1984 and only went into widespread use in the late 1980s. This means that the longest time a human embryo has been stored is 12-15 years and, typically, patients that have left embryos in storage for this long are not coming back for them. Some patients have come back after 10-12 years and the embryos have been thawed successfully. Beyond this time frame, we don't know how long an embryo will remain viable.
Fetus is a transplant of foreign tissue in the mother. However transplant is tolerated and not rejected by mother because of the following except one?
Fetus is not a transplant in the body of the mother. Food you ingest does not go inside the body. It remains out side the body. like wise the fetus is not inside the body. It is outside the body of the mother. The proteins from the fetus do not come in direct contact of the mother. There is placental barrier between the fetus and the mother.
What is the study human face called?
Through some research, what I could come up with is the name Physiognomy.
Where does the endosperm come from in a plant and what is its purpose?
the endosperm is in the gymnosperm 'naked seeds' and the angiosperm flowering plants. in gymno - haploid (n) gives nutrients to the embryo the only difference with the angiosperm is that its not haploid (n) but triploid (3n)
What is sn embryo?
An embryo is an ungrown baby inside the mothers womb. It has developed eyes and ears and a sort-of-nose and a body shape. When everything is in place it will become a fetus, then after a while the fetus come out - plop! - and there you have a baby! Not an amazing description but there you go! xx
Can two human embryo come from one egg?
Yes they are identical twins.
Did you come from your mum's tummy?
Yes you did. The tummy is called the abdominopelvic region. And inside there is a special place called a uterus. When a baby develops, it starts out as an embryo implanted in the wall of the uterus. And as it grows mum's tummy gets bigger. Then after about nine months, the baby wants to come out because there is not enough space in her tummy anymore. And then the baby inside, called a fetus, it is delivered through the birth canal out into the world and we have a new baby that will grow into an adult human being.
What percentage of its chromosomes does a sperm cell contribute to a new embryo?
In a human, 23 chromosomes (formally known as the diploid number) - half the total in an embryo. The other half come from the egg.
What part of a developing embryo are stem cells derived from?
Stem cells come from newly fertilized eggs.
What the difference between embryonic stems cells and cord blood stem cells?
Cord blood stem cells come from a newborn's umbilical cord while embryonic stem cells are harvested from a human embryo. Although the procedures involved in harvesting it are totally different. A doctor can immediately removed a newborn's umbilical cord and squeeze out those stem cells. Getting stem cells from the embryo requires to kill a forming fetus inside the womb and this procedure is considered unacceptable.
What flowers petal parts come in sets of 4 or 5?
a plant embryo
How does the fetus come out after misscarriage on human?
After a Miscarriage, the fetus will be disposed of by the body just like blood during your period would. It can happen several days later though and you have to go to a doctor to get exmined in case something is left inside. That can lead to infections.
Could a pregnancy test come back positive if the fetus dies and you havent started bleeding yet?
yes but this is called still birth.
Can you be pregnant before you even get your first period?
Pregancy starts when the egg and sperm come together and become 1. It is called an embryo from the moment of fertilisation/conception until the end of the 8th week of gestational age, whereafter it is instead called a fetus. Example; if the egg is fertilized on the 20th day after your last period, the doctor will determin the age from answers you give and the size of the embryo after a set amount of time.
Where do the lungs come from?
They are grown from dividing cells in the animals embryo.
Where does the name placentals come from?
placenta which is between the mother and the embryo.
