0
b. morula, a small, tightly packed bunch of cells that is the result of cleavage. A hollow ball of cells is formed after, called the blasocyst. The gastrula still comes later,when cells begin to push at the primitive streak.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe cells that are madly dividing in the days after conception will eventually split off to form the placenta, umbilical cord and the baby. By 25 days there is a tiny heart starting to beat, a rudimentary circulatory system and a neural tube that will develop into the CNS, including the brain and spinal cord.
Spina Bifida occurs in this very early stage - the neural tube fails to close completely - leaving the brain and or the spine open to damage.
Add your answer:
Earn +20 pts
When spores germinate what generation develops?
first
What develops first on a plant?
When a seed germinates the radical emerges first, followed by the leaves
What part of a seed develops first?
In fact the development of a seed starts from an ovule, the ovule primordium develops on the placenta of the ovary. It gets enclosed by the outer and inner integuments, which form the seed coat on maturity. Thus seed coat develops first and after fertilization the embryo comes in to being.
What is a virgins womb?
It is the muscular organ unique to female placental mammals about a size of a clenched fist where a baby develops. It is very elastic and expands dramatically as the baby grows. The pear shaped muscular in the reproductive organ from the menstruate from females and it a normal develops pregnancy.
What happens before birth?
before birth the zygote develops first into an embryo and the into a fetus
What develops from an embryo?
In plants embryo develops in new seedling and in animals it develops into feotus which later develops into baby
What develops in the uterus during the first two months of pregnancy the first two months?
The fetus
What trimester of pregnancy does the sternum develop?
The sternum develops somewhere between week 6 and 8, so well within the first trimester.
Does cholestasis come from Pregnancy?
Pregnancy increases the sensitivity of the bile ducts to estrogen, and cholestasis often develops during the second and third trimesters of pregnancy
Which week of pregnancy is the neural tube is formed?
In the 3rd week of pregnancy called gastrulation, specialized cells on the dorsal side of the fetus begin to change shape and form the neural tube.
What condition is a congenital defect of the spine that develops during early pregnancy?
spina bifida
In which trimester of pregnancy does the embryo develop brainwaves and a beating heart?
The heart begins to beat at the end of 3 weeks. Our 'reptilian brain' develops within the first two months, but our conscious thought does not develop until six months into the pregnancy.
How does MYOMA develops?
Myoma develops in women mostly during the reproductive years. This grows very quickly during pregnancy when the bodyÕs creating extra estrogen.
What is the medical term meaning blood vessel-filled organ that develops during pregnancy?
The placenta.
What is the organ the develops between the embryo and the uterus during pregnancy and filters the nutrients and oxygen?
The Placenta.
What is the function of the chorion?
The chorion is a membrane that develops at the start of pregnancy. Its main function is to contribute to the formation of the placenta.
Where can I find information on pregnancy week by week?
Babycenter's website has a very detailed information chart on how a fetus develops week-by-week during a pregnancy. The site also has an information chart on how twins develop during pregnancy.
