How long can sperm survive in the body

When a man is married, he will ejaculate his sperm into the woman's body. The survival time of male sperm in a woman's body is a certain number of days, and there is a relatively large difference in the survival area of ​​male sperm in a woman's body. Generally speaking, male sperm will appear in the female vagina, cervix and both fallopian tubes in the female body. This article will explain in detail the survival time of male sperm in different areas.

1. How long does male sperm stay in the female reproductive system?

The acid-base balance in the vagina is usually pH 3.5-4. Although in theory, fertilization can be achieved as long as there is a living sperm, in fact, in the acidic and alkaline environment of the vagina, most of the sperm will be destroyed soon after entering the vagina. Only with the storage of a certain amount of sperm can the survival rate of a few sperm with high motility be increased enough to gain the opportunity to enter the uterus and be inseminated.

Without the surrender of a large amount of sperm, and without a certain amount of semen cache to improve the acid-base environment in the vagina, it is impossible for a single sperm or a small number of sperm to survive and fertilize in the acid-base environment of the vagina.

Under normal circumstances, the survival time of male sperm in the female vagina: 2 hours after sexual intercourse, 90% of them die； For 36 hours, not even the dead could be seen. In the vagina of pregnant women, the stronger the acid value, the faster male sperm dies.

2. The retention time of male sperm in the cervix

Changes in the pH of cervical mucus have a great impact on the penetration of male sperm. When the pH is lower than 6.5, male sperm stops moving. When the pH is 7, it has slight penetration ability. When the pH is 7.5, the penetration ability is normal, and when the pH is 8. The penetration ability is stronger at 2 o'clock.

There is a lot of mucus blocking the outer opening of the cervix, which prevents many male sperm from penetrating and dies outside. Cervical mucus is thick and stretchy just after menstruation. ； As the ovulation period approaches, due to the increase in estrogen in the blood, the mucus becomes more abundant, clearer, and smoother. ； During the ovulation period, a large amount of mucus becomes clear and drains away, making it easier for male sperm to penetrate.

Male sperm pass through cervical mucus with the help of enzyme hydrolysis. Pancreatic proteins chymotrypsin and hyaluronidase can hydrolyze cervical mucus, reduce viscosity, reduce the production of sticky threads, and help male sperm pass through.

Under normal circumstances, the survival time of male sperm in the cervix: In the cervix, male sperm can be found in the cervical mucus 15 minutes after sexual intercourse.； An hour later, the male sperm enters the inner mouth ； In the uterine cavity, there are already sperms in the uterine cavity 1 hour after sexual intercourse. After 6 hours, they are all motile sperms. After 12 hours, 5/6 sperms are still alive. After 36 hours, 1/4 sperms are still alive. After three days, there are no viable ones. But sometimes some sperm survive for a very long time.

3. The retention time of male sperm in both fallopian tubes

In both fallopian tubes, there will be active sperm after 14 hours of sexual intercourse. Sometimes there are still active sperm after 35 days. Generally, those who are 14 days old are more active, and some enter the abdomen. Those who move slowly are pushed back into the uterine cavity by the microvilli flow.

The article explains in detail the timing of sperm survival rates at different locations in a woman’s body. If you are a normal man, your sperm will survive in a woman's body for a very long time. Male sperm can survive the longest in both fallopian tubes, even for 35 days.