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Fertilization
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You know where babies come from, but do you know how exactly fertilization happens?
✨ Track your baby’s development with the world’s #1 pregnancy and parenting resource:
Connect with BabyCenter:
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You know where babies come from, but do you know how exactly fertilization happens?
After intercourse, tens of millions of sperm travel through the vagina, the cervix, and the fallopian tubes. They propel themselves forward by wiggling their tails, fighting against currents that can hold them back. Eventually, one will randomly merge with the ova, the unfertilized egg released during ovulation in a fallopian tube. After the ovum is pierced by a sperm, it hardens and becomes impermeable to other sperm. The sperm sheds the tail it no longer needs and the genetic material of the egg and sperm join together. Once they start dividing, they form a blastocyst.
About five or six days after the egg is fertilized, it travels from the fallopian tube to the uterus, where it implants itself and continues developing.
✨ Track your baby’s development with the world’s #1 pregnancy and parenting resource:
Connect with BabyCenter:
-------------
You know where babies come from, but do you know how exactly fertilization happens?
After intercourse, tens of millions of sperm travel through the vagina, the cervix, and the fallopian tubes. They propel themselves forward by wiggling their tails, fighting against currents that can hold them back. Eventually, one will randomly merge with the ova, the unfertilized egg released during ovulation in a fallopian tube. After the ovum is pierced by a sperm, it hardens and becomes impermeable to other sperm. The sperm sheds the tail it no longer needs and the genetic material of the egg and sperm join together. Once they start dividing, they form a blastocyst.
About five or six days after the egg is fertilized, it travels from the fallopian tube to the uterus, where it implants itself and continues developing.
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