1 St. 57 Min, 6 Nov 2002 Jahr - Fertilization

Beschreibung:

Sperm enter the vagina during intercourse and go through the cervix to penetrate the egg that developed during ovulation. A zygote is created that moves throgh the fallopian tubes. The zygote dividides to create more cells to become a blastocyst. The blastocyst then attaches to the uterus.

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