Implantation of sperm to egg

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When an egg is extruded every month from the surface of one of the ovaries ovulation , it is released freely into the abdominal cavity rather than directly into the tube. Pregnancy Side-Effects and What to Do About Them July 11, The egg becomes fertilized with a sperm within 12 hours after ovulation, usually in the outer portion of the fallopian tube. Embryology Obstetrics Human reproduction Fertility Midwifery. By using this site, you agree to the Terms of Use and Privacy Policy. Most of the spermatozoa in the ejaculate are contained in the very first portion of fluid that squirts out of the penis and enters the vagina. Leave this field blank.
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The Journey from Egg to Embryo

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Implantation (human embryo) - Wikipedia

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Pregnancy and Conception

You might see an increase in the amount of vaginal discharge during that period of time. When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter. The complementary spermatozoal ligand for ZP3 defies unequivocal identification at present. Shortly thereafter, at the 32—cell stage 4—5 days post ovulation , the blastocyst is formed, characterized by the presence of a cavity or blastocoel and the presence of two cell types:
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