Egg meets sperm (article) | Embryology | Khan Academy - When sperm and egg come together
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Read and learn for free about the following article: Egg meets sperm. on a fine line between protecting these areas and allowing sperm to come through. the egg cell, the plasma membranes of the two cells fuse together and the sperm. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to hours. Only a few hundred will even come.