During the 1st trimester, all the major body organs form. The heart begins to beat at 4 weeks, and by the end of the 1st trimester fetal heart sounds are able to be heard. During the 2nd trimester, the fetus looks like a baby, the sex of the baby can be determined, and sometime between the 16th-20th weeks the mother will begin to feel the baby's movements. The baby will become more active. Hair, eyebrows, and eyelashes develop. During the 3rd trimester, the baby develops the ability to breathe as surfactant is produced. Finger and toe nails form, and the baby continues to grow and create subcutaneous fat. During this time the baby is also able to open and close it's eyes.
The different stages of a fetus include fertilized egg, zygote, embryo and fetus. It takes nine months for all these stages to complete and a baby is born.
cell, zygote, embryo then fetus!
An embryo during the late stages of development is known as a fetus.
fetus
A developing baby in the early stages is called an embryo. This stage begins at fertilization and lasts for about 8 weeks. After that, the term fetus is used to describe the developing baby.
1. xygote 2. gamete 3. embryo 4. fetus (also spelled foetus, fœtus, faetus or fætus) 5. infant...
All stages, however I believe most of the damage can be done in the first 4 months until the fetus is almost completely developed.
At the first cell division of the zygote (fertilized egg), according to Wikipedia: http://en.wikipedia.org/wiki/Embryo
in this order: zygote, embryo, fetus (after fertalization takes place)
1.cervical dilation and effacement. 2.expulsion of the fetus. 3.expulsion of the placenta.
The young or embryo of an animal in the womb, or in the egg; often restricted to the later stages in the development of viviparous and oviparous animals, embryo being applied to the earlier stages.
The scientific term for a baby in the womb is "fetus." This term is used to describe the developing offspring of mammals after the embryonic stage and before birth.
When different things need to be done at various stages then the completed stages are recorded on different documents.