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Tuesday 18 August, 2015 |

The Sperm how long can live in the women body

Sperm are humans thrive of the material, the factory system of testicular sperm weight is about 10.5 ~ 10.5 grams, surrounded by white film packages, which surrounds the 250 ~ 400 lobular, each leaf of 1 ~ 4 hovering seminiferous tubule, wast a diameter of 50 microns, mature increases to 170 microns.1 piece, the total length of seminiferous tubule in testis unilateral for 255 meters.Per gram of testicular tissue about release 10 million sperm every day.Due to the female's ovulation each are not identical, and sexual intercourse, not necessarily it's the time to ask sperm must wait for eggs, in order to increase the opportunity to meet.So the sperm in female reproductive tract survival time length have important relationship with fertility.1, the sperm in female reproductive tract remaining time:Vaginal acid fluids for ordinary pH3.5-4.Although theoretically as long as there is a live sperm can be fertilised, but in fact in the vagina of acidic conditions, most of the sperm into the vagina soon died.Only under a certain amount of semen buffer, is likely to make a few strong vitality of sperm survival time lengthen, gain access to the uterus and fertilization.Without a lot of sperm sacrifice, without a certain amount of semen buffer improve the acid and alkali environment of the vagina, a single sperm or very little few sperm in the vagina is impossible to survive in the acidic environment and fertilization.Under normal circumstances, the survival time of sperm in the vagina is: 2 hours after sexual intercourse, 90%;36 hours, even death can't see.Sperm in the vagina of pregnant women, the stronger the acidity of the faster the death.2, sperm cervix and remaining time:The change of the acidity in the cervical mucus, has a great influence on the sperm through.PH less than 6.5, sperm stop activities, pH7, mild wear into the ability to initiate pH7.5, through normal abilities, pH8.2 through ability is stronger.Outside the cervical mouth has a lot of mucous congestion, caused many sperm can't wear into the die outside.Cervical mucus during menstruation just out of date and thick and tough;When close to ovulation, because female hormones in the blood increases, mucus more, clearing, spins increased;At the time of ovulation, mucus quantity more, clearing, outflows, sperm is easy to wear.Sperm to penetrate the cervical mucus, depend on enzyme hydrolysis.Pancreatic protein undergraduate chymotrypsin and hyaluronidase can hydrolyze the cervical mucus, lower viscosity, loss of ropiness formation, and is conducive to sperm.In general, the sperm in the cervix and survival time is: within the cervix, sexual intercourse after 15 minutes, can be found in the cervical mucus sperm;Within an hour later, the sperm into the mouth;1 hours after sexual intercourse in the womb, intrauterine with sperm, after 6 hours, all the activities of sperm, 5/6 of the sperm still alive after 12 hours, 36 hours after a quarter of the sperm is still alive, after three days, no live.But sometimes there are some sperm survival time were particularly long.3, sperm in the remaining time within the fallopian tube:Within the fallopian tubes, sexual intercourse after 14 hours has the activity of sperm, 35 days still sometimes have live sperm, generally are the most active for 14 days, some into the abdominal cavity.Bradykinesia, are cilia flow back to the uterus.

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