Find the list of best surrogacy doctors in India who offers the best treatment with the highest success rate. The list has been categorized on the basis of doctors fame, experience, reviews, ratings, and cost. Dr. Mohit Saraogi from Saraogi Hospitals and IRIS IVF Centre and Dr. Kaberi Banerjee from Advanced Fertility Centre top the list of the best surrogacy doctors in India.
Ever wondered how a mere egg and a sperm turn into a baby? In this article, we discuss in detail how development of embryo takes places through the stages. The Stages of Fertilization, Blastocyst, Implantation of Blastocyst, development of the Embryo and fetus are all explained.
A successful pregnancy follows some static procedures starting from sex to implantation of the embryo in the uterus lining. Embryonic development or development of embryo is an entire gamut of procedures and goes through numerous stages. It begins following the biological clock where the sperm reaches the mature egg during its opening to form a zygote. The different stages are discussed below in detail.
1. The Stage of Fertilization
This stage is known as union of gametes. The female gamete or the egg comes in contact with the male gamete or the spermatozoa inside the female reproductive system either through natural course of intercourse or through Assisted Reproductive Technology (ART). Normally it occurs during her ovulation, when a woman releases her mature egg or ovum to the fallopian tube. Some women release two eggs (in case of fraternal twins) as well. If the sperm happens to reach the egg during its grand opening, it enters into the egg and a zygote is formed within 24-48 hours.
However, fertilization is not this simple and there may be a large pool of problems, which work against fertilization. Some of them are anovulation (no ovulation/no ovum release), poor egg quality, poor sperm morphology, inability of the sperm to travel to fallopian tube etc.
2. Blastocyst Stage
As soon as the zygote/embryo is formed, the cells within keep developing constantly. This complex form of development is called Blastocyst. A Blastocyst has two layers of cells-inner cells and outer cells. The inner cells form into muscles, bones, blood and other body parts whereas the outer cells grow into Placenta at a later stage. The Blastocyst is coated with a jelly like protective layer called Zona Pellucida, which helps the Blastocyst to grow effectively. When the cells within the Blastocyst multiply themselves effectively, the Zona Pellucida gets tighter and breaks accordingly. The Blastocyst gets independent and implants itself to the uterus linings in day 10 or later. However, not all Blastocyst development is successful. Blastocyst arrest or failure happens when the cells stop dividing themselves.
3. Implantation of Blastocyst
After the removal of Zona Pellucida, the Blastocyst enters the uterus and implants itself to the linings/ mucus membranes of the uterus. The inner tissues of the uterus and the outer linings of the Blastocyst help in developing the Placenta. Placenta is very important for the baby to survive as it feeds the baby. However, often we hear about blighted ovum, which means the failure of the implanted uterus in its development. It occurs due to abnormalities in the chromosomes of the sperm or the egg, or the cell division in the Blastocyst.
4. Development of the Embryo
After the Blastocyst completes its implantation in the inner linings of the uterus, it turns into an embryo. This is the stage where the body of your baby starts developing their form. Mouth, throat, lower jaw, blood circulation system, heart tubes etc. start developing. The ears, arms, legs, spinal cord and everything start to form and fetus development starts from this stage. However, with many functioning taking place, many a times embryo development stage is very sensitive. The genetic abnormalities or external pressure may sometimes work against the growth of the fetus.
5. Development of the Fetus
After 12th week of fertilization, fetal development starts properly. Till this time, all the important organs of the baby forms. This is the beginning of the second trimester. In the first trimester itself the fetus grows its upper and lower extremities. At this stage, reproductive organs develop. From this stage onwards the fetus grows week by week and at the end of 9 months, it comes out to the world and become one of us.
There is ample amount of risk in this stage also as the development is faster and complex. Proper care and timely medical intervention is required thus at every stage of its development.
Below is a video showing you the Fetal development month by month - all the stages of Baby Growth in the Womb.
Hope this article was interesting enough for you to explore the world of embryonic development stages. Follow Elawoman to get regular updates on fertility health and treatment.
SOURCES AND REFERENCES:
- Blocked fallopian tubes causes and treatment fallopian tube, Elawoman - 2017
- What is egg white cervical mucus mucus, Elawoman - 2017
- Best ways to boost sperm count and increase male fertility sperm, Elawoman - 2017
- All you need to know about embryo freezing embryo, Elawoman - 2017
- Know growth of 12 weeks fetus, while 12 weeks pregnant fetus, Elawoman - 2017
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