Men's sperm and female eggs must be combined to enable women to conceive. Normal mature male ejaculation can discharge hundreds of millions of sperm at once, but most of these sperm causes death due to the acidic environment of female reproductive tract.This is also one of the reasons.Many people will doubt this, how long is the sperm's survival time in women's body?
Generally speaking, the life of sperm in women's vagina does not exceed 8 hours.Then there will be only a small number of sperm from danger and continue to move forward.This is why because the sperm in the semen when male ejaculation is ejaculated, a large amount of fruit sugar and the enzyme protection of the semen can be obtained. When the sperm enters the uterine cavityIn the semen, the life span is greatly shortened. The sperm with poor quality is slow and cannot reach the uterine cavity quickly.
Then, after sperm enters the woman's body, how long is the sperm's survival in women's body? Experts say: Sperm pass through the way, and the sperm can eventually reach the tubal fertilization part.However, as long as the sperm enters the fallopian tube, it has strong fertilization ability.Of course, in the end, only 1 & mdash; 2 sperm was fortunate to be combined with eggs, and the remaining sperm died within 36 hours.Only sperm stored in the cervical mucosa hidden nest can only reach 2 & mdash; 6 days. Although so, its ability to fertilize has basically lost, because most of the sperm's fertilization ability can only maintain for about 20 hours.
The ovarian has the strongest fertilization ability within 15 to 18 hours after the ovaries are discharged from the ovaries, and can maintain the fertilization ability up to about 30 hours. After that, the eggs begin to degenerate, and the fertilization ability will be weakened and disappeared.
Although the sperm in the female reproductive tract may survive for a maximum of 4 to 5 days, the time that has strong fertilization is 1 to 2 days. That is to say, only one to 2 days before and after the women's ovulation can sexual intercourse can conceive.This is very important for guiding sexual life of infertility couples.Some couples have no problems with fertility, but they are infertility for several years after they ignore the opportunity of conception.
(Editor in charge: Chen Bong)
