What is the lifespan of human spermatozoa?

Human spermatozoa can survive for about 3 to 5 days within the female reproductive tract after ejaculation, depending on various factors such as the cervical mucus environment. Outside the body, sperm viability is significantly shorter, typically lasting only a few minutes to a couple of hours. However, in optimal laboratory conditions, such as in a sperm bank, they can be preserved for much longer through cryopreservation.