- There are more than 350 million sperm in a single ejaculate, but only 1 sperm fertilizes an ovum.
- In the vagina mucous is the semen must be dissolved by a enzyme before sperm can move.
- Initial reduction of sperm occurs at the cervix, and about 1 million sperm enters the uterus.
- Uterine contractions carry the sperm towards the fallopiantube, but only 1000 enters fallopian tube.
- Although about 100 sperm reach the ovum only one sperm fuses the with its nucleus
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