During intercourse, sperm are deposited in the vagina next to the opening to the uterus, called the cervix. The mucus, which fills the cervix, becomes clear and abundant around the time of ovulation. Motile sperm migrate through the cervical mucus to reach the uterus. Most of the sperm in semen remain in the vagina and do not participate in fertilization.
Sperm are moved by the uterus to the Fallopian tubes, and a few sperm then migrate into the tube. Living sperm can be stored in the Fallopian tube for several days after interdourse. Sperm that have been cryopreserved (frozen) do not survive more than one day in the Fallopian tube after thawing and insemination.
When ovulation occurs, the egg enters the Fallopian tube. Motile sperm can then fertilize the egg.
Sperm are moved by the uterus to the Fallopian tubes, and a few sperm then migrate into the tube. Living sperm can be stored in the Fallopian tube for several days after interdourse. Sperm that have been cryopreserved (frozen) do not survive more than one day in the Fallopian tube after thawing and insemination.
When ovulation occurs, the egg enters the Fallopian tube. Motile sperm can then fertilize the egg.
