After an egg and sperm meet (fertilization), a series of significant changes occur in the female body to support the developing embryo.
Initial Journey and Implantation
- The fertilized egg, now called an embryo, begins its journey through the fallopian tube towards the uterus.
- Once it reaches the uterus, the embryo implants, or attaches itself, to the uterine wall.
- This implantation is a critical step, marking the beginning of pregnancy.
Placenta Formation and Hormone Production
- The implantation process triggers the formation of the placenta.
- The placenta is a vital organ that nourishes the growing embryo.
- It also starts to produce and release a crucial hormone called human chorionic gonadotropin (hCG).
- hCG is released into the mother's blood and urine, and is used to confirm pregnancy using tests.
Summary of Key Changes
| Change | Description |
|---|---|
| Fertilized egg | Travels through the fallopian tube to the uterus. |
| Implantation | The embryo attaches to the uterine wall. |
| Placenta formation | Begins developing to nourish the embryo. |
| hCG production | The placenta releases hCG into the blood and urine, indicating pregnancy. |
