Question

How is embryo formed?

Answer 1

Embryo:

An egg is discharged into the fallopian tube from an ovary once per month.

The cell lining of the fallopian tube aids in fertilisation, which takes place there.

1. Following the sexual activity, sperm travel from the vagina through the uterus and cervix to the fallopian tubes, where one sperm penetrates the egg and causes fertilisation of the egg.
2. The microscopic hair-like cilia lining the fallopian tube move the fertilised egg or zygote toward the uterus.
3. The zygote or fertilised egg divides numerous times as it travels via the fallopian tube to the uterus.
4. A zygote needs 3 to 5 days to enter the uterus.
5. The cells in the uterus continue to divide, creating a hollow cell ball known as a blastocyst.
6. A few days after conception, the blastocyst implants in the uterine wall and grows into an embryo that is surrounded by fluid-filled membranes and linked to a placenta. Implantation is the process, and it lasts 9 to 10 days.
7. The inner cells in the thickened region of the zygote form the embryo, and the outer cells penetrate the uterine wall and grow into the placenta. The placenta produces a number of hormones that aid in sustaining pregnancy.
8. If that egg is not fertilised, it descends from the fallopian tube into the uterus.
9. It degenerates in the uterus and is expelled with the subsequent menstrual cycle.