| Sperm and Fertilizaiton | |||
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Sperm is deposited in the vagina during coitus (intercourse)
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comming orgasm |
male | ||
| rhythmic, involuntary contraciotns in smooth muscle of male reproductive tract. (vas deferens and prostate) is reflex once started cannot stop | |||
| female | |||
| involuntary uterine and vaginal contactions and movement of the uterus | |||
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30 minutes after ejaculation, contractions of the uterus
will move the sperm deper into the reproductive tract.
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Of the millions of sperm in an ejacutlaiton only a few
hundred reach the egg
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A process called capacitation activates the sperm so that
is ready to fertilize the egg. The sperm can swim and it can chemically
sense the egg (molecules are given off) and swim towards the egg.
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Fertilization
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fusion of hte sperm nucleus iwth the nucleus of a mature
egg ( no mitochondria from the male)
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| Wanting to get pregnant | Most fertal period is right after fertilization, but serm may live for several days as well s the egg. | ||
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buying sperm?
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