How do sperm reach the egg?

Sperm navigate through the cervix, swim through cervical mucus, and push against cilia in the fallopian tube to reach the egg.

What happens after fertilization?

After fertilization, the zygote moves to the uterus, implants in the uterine lining, and grows for nine months until birth.

Cilia in the fallopian tube help sperm reach the egg by providing a surface for them to push against during their journey.

The zygote develops into an embryo in the uterus, growing and maturing for nine months until it is ready for birth.

The genetic characteristics of the baby are determined by the unique genetic code formed when one sperm fertilizes the egg during conception.

Protective elements in the fluid of the vagina help some sperm survive the acidic environment, allowing them to navigate through the cervix, uterine contractions, and immune system cells to reach the fallopian tube.
Only a few dozen sperm out of the initial 300 million reach the egg in the fallopian tube, with one eventually fertilizing it, leading to the formation of a zygote with a unique genetic code that implants in the uterine lining, determining the genetic characteristics inherited during fertilization.

How do sperm reach the egg?
Sperm navigate through the cervix, swim through cervical mucus, and push against cilia in the fallopian tube to reach the egg.
What happens after fertilization?
After fertilization, the zygote moves to the uterus, implants in the uterine lining, and grows for nine months until birth.
What is the role of cilia in fertilization?
Cilia in the fallopian tube help sperm reach the egg by providing a surface for them to push against during their journey.
How does the zygote develop after fertilization?
The zygote develops into an embryo in the uterus, growing and maturing for nine months until it is ready for birth.
What determines the genetic characteristics of the baby?
The genetic characteristics of the baby are determined by the unique genetic code formed when one sperm fertilizes the egg during conception.

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During sexual intercourse, around 300 million sperm enter the vagina, with many dying due to the acidic environment, but some surviving thanks to protective elements in the fluid. The sperm then navigate through the cervix, swim through thinned cervical mucus, and face muscular uterine contractions and immune system cells before reaching the fallopian tube.
Inside the fallopian tube, sperm must push against cilia to reach the egg, undergo membrane changes to become hyperactive, and release enzymes to penetrate the egg's layers. Only a few dozen sperm out of the initial 300 million reach the egg, with one eventually fertilizing it, leading to the formation of a zygote with a unique genetic code.
The zygote, now a single cell, moves towards the uterus where it implants in the uterine lining, growing and maturing for nine months until birth, determined by the genetic characteristics inherited during fertilization.