Pregnancy is a delicate period that requires specialised care and research. You may be aware that this period is divided into three trimesters. However, did you know there are also 3 stages of fetal development? These stages are explained below to show how pregnancy progresses from week to week.
What are the Three Stages of Fetal Development Called?
The three main stages of the journey through fetal development are known as germinal, embryonic, and fetal.
- Germinal Stage (Weeks 1-2)
This stage begins when sperm fertilises the egg, leading to the formation of the zygote. The zygote subsequently descends the fallopian tube towards the uterus, where attaches itself to the uterine wall. Within the first two weeks, the zygote undergoes quick cell division, forming the foundation for further development during this early period.
- Embryonic Stage (Weeks 3–8)
After implantation, the zygote becomes an embryo. Major organs and structures are formed at this stage. At the end of the embryonic stage, the baby’s heart starts beating, and the early brain and parts of the spinal cord and limbs begin to form. In addition, cell division occurs at an increased speed, differentiating cells into different types. This is a significant milestone that is usually tracked in each stage of pregnancy, week by week. For example, neural tubes form by the fourth week and later develop into the brain and spinal cord. Fingers and other delicate parts of the body begin to appear in an eight-week-old embryo.
This is the longest stage of pregnancy, running from week nine until birth. At this fetal stage of development, an embryo is called a fetus. During the embryonic stage, organs begin to form and continue developing throughout pregnancy. By the end of the first trimester, all organs and systems are formed; from then on, the focus is on growth and maturation. Each week brings notable changes in the fetus. For instance, by the twelfth week, the fetus can make sucking movements, and by the twentieth week, you may feel the first kicks.
At around 12 weeks, the fetus can open and close its fingers and curl its toes. Around the 16th week, ultrasound images may reveal the baby's sex. By the 24th week, if necessary, the fetus can potentially survive outside the womb or be delivered as the lungs are relatively functional at this stage, aiding in successful survival.
Conclusion
It is necessary to understand the fetal stages of development by week when preparing to deliver. Additionally, to ensure that both the infant and mother are sufficiently protected and healthy, it is prudent to acquire an appropriate health insurance policy that covers healthcare costs and allows for continuous access to high-quality healthcare.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.