LiLKeVyY
The embryonic period is the first eight weeks of development of the conceptus, beginning with fertilization. During this period, the embryo undergoes an amazing transformation from a single cell to a recognizably human embryo. In the mid-twentieth century, George Streeter devised a commonly used embryo classification system by dividing the embryonic period into 23 stages. The embryonic period is followed by the fetal period, which encompasses the remainder of theprenatal development.
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∙ 14y agoWiki User
∙ 8y agoThe germinal period is the two week period after the sperm and the egg unite. During this time:
-the zygote (fertilized egg) is created
-the zygote rapidly divides and moves down the fallopian tube
-the zygote is implanted on the uterine wall
-there is rapid cell division.
-the blastocyst (a hollow structure containing cells) separates into three layers. The outer layer (ectoderm), which later forms the skin, hair, salivary glands, nervous tissue, placenta etc, the middle layer (mesoderm) which forms all the bones, blood, teeth, connective tissues, muscles, etc, and the inner layer (endoderm) which forms the majority of the internal organs such as stomach, liver, heart, etc.
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∙ 13y agoduring the first two months of developing the embryo is about 2.5 cm long and is biginning to develop recongnizable features
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∙ 10y agoit licks itself
The first two months of pregnancy are the most important months of the pregnancy. The heart, brain, and other vital organs begin developing.
During the first two months of pregnancy the unborn child is known as an embryo.
During the first two months of pregnancy the unborn child is known as an embryo.
Fetus
embryo The first three months of pregnancy are the first trimester
embryo
the embryo is moved into the uterus.A sac called the placenta forms around the embryo,connecting it to the uterus by the umbilical cord.the umbilical cord supplies the embryo with nutrients and oxygen from the mother's body.Then the embryo develops into a fetus and limbs, body systems, bones, sense organs, and the brain.
miscarriage, stillbirth, or damage to the fetus during the first trimester (three months) of pregnancy.
Yes you can
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.
no, you cant drink liquor at all during pregnancy.
No, The only way to terminate a pregnancy during the first three months is an abortion with a doctor.