Spermatozoa are produced in the testes from puberty until death. The rate of production is 1, spermatozoa per second — 24x7. This slows down with age beginning in the thirties. Production of sperms takes about 72 days and it takes about 14 days for the spermatozoa to travel from the testes to the ejaculate, the semen.
12 Widely Believed Sperm Facts That Are Actually False
Sperm: How long do they live after ejaculation? - Mayo Clinic
Sperm can live outside the body for varying amounts of time, depending on several factors, including the environment Ie: cervical mucus, where they end up… 9. This is an incredible feat compared to the brief lifespan of a mere few hours when no cervical mucus is present 2 , 4. This is part of why tracking cervical mucus is crucial to understanding your fertility. Studies show that if sperm enters the vagina when cervical mucus is most fertile, a few days before ovulation, pregnancy is not only possible but actually more likely 7 , In short, how long sperm can live inside a vagina depends on the conditions when it made its way in there.
A lot of numbers are thrown out there about the lifespan of sperm but here's the scoop: sperm can live as little as a couple of hours or as long as five days after sex. Once inside the vagina, the lifespan of the sperm depends on the woman's vagina, uterus, and fallopian tubes. Without fertile cervical fluid, sperm won't survive longer than a few hours inside the vagina or uterus if they make it that far. Many sperm die off in the very acidic vaginal canal within the first 12 hours. If they can make it past the uterus into the fallopian tubes using fertile cervical fluid channels, they can live there, waiting for the release of an egg.