Sperm and egg are necessary prerequisites for ensuring that women can conceive, and their physical condition is good in a timely manner. However, if either sperm or egg has problems, pregnancy will not proceed smoothly. Many women preparing for pregnancy are eager to know how long sperm can survive in the body, which can help us understand the relevant knowledge of fertility. Next, let's take a look at how long sperm can survive in the body at most?
1. Sperm stays in the vagina for a certain amount of time
The pH of vaginal acidic secretion is usually 3.5-4. Although in theory, fertilization can be achieved with just one live sperm, in reality, in the acidic environment of the vagina, most sperm die shortly after entering. Only with a certain amount of semen buffering can the survival time of a very small number of strong sperm be extended, giving them the opportunity to enter the uterus and fertilize. In general, the survival time of sperm in the vagina is: 2 hours after sexual intercourse, 90% of them die; 36 hours, I can't even see the dead. In the vagina of pregnant women, the stronger the acidity, the faster the sperm die.
2. The retention time of sperm in the cervix
In general, the survival time of sperm in the cervix is: within the cervix, sperm can be found in the cervical mucus 15 minutes after sexual intercourse; After one hour, the sperm enters the inner opening; In the uterine cavity, there are sperm within 1 hour after sexual intercourse. After 6 hours, all the sperm are active. After 12 hours, 5/6 of the sperm are still alive, and after 36 hours, 1/4 of the sperm are still alive. After three days, there is no sperm left alive. But sometimes individual sperm have a particularly long survival time.
3. The retention time of sperm in the fallopian tubes
In the fallopian tubes, there are active sperm after 14 hours of sexual intercourse, and sometimes there are still active sperm after 35 days. Generally, the most active sperm are those who have been in the fallopian tubes for 14 days, and some may enter the abdominal cavity. Those with delayed movement are pushed back into the uterine cavity by cilia flow.
The above is the encyclopedia introduction about how long sperm can survive in the body. In short, the time for sperm to have strong fertilization ability in the female body is 1-2 days, which means that conception is only possible after sexual intercourse within 1-2 days before and after ovulation. I hope this article can be helpful to everyone.
