The process of fertilized egg combination

The process of fertilized egg combination refers to the process of conception, which mainly refers to the combination of sperm and egg. The fertilized egg after combination will enter the female's uterus through the fallopian tube. The fertilized egg will survive in the fallopian tube for about 24 hours. It will enter the uterus and begin to implant and grow gradually. As time goes by, it will gradually develop and give birth after full term.

Conception process

The conception process refers to the process in which sperm and egg meet, fertilize, and then the fertilized egg is transported to the uterine cavity through the fallopian tube. That is, the ampulla of the fallopian tube waits for fertilization. The egg survives for about 24 hours.

After sexual intercourse, semen accumulates in the vagina. There are a large number of sperm in the semen, and the survival time of sperm is about 72 hours. The active sperm passes through the uterus to the ampulla of the fallopian tube to meet and fertilize the egg. The fertilized egg is then transported to the uterine cavity through the fallopian tube and "travels" in the uterine cavity for 2 to 3 days, looking for a suitable place to settle, and then implants and grows and develops in the uterine cavity until full-term delivery.

Conception process

From a medical point of view, the process of conception includes: the ovaries release normal eggs; the fallopian tubes pick up the eggs and transport them to the normal fertilization site. Some patients are very worried that all the sperm will flow out after sexual intercourse and not enter the body. This confuses the two different concepts of "semen" and "sperm". What we see flowing out is semen, not sperm. There are a large number of sperm in the semen, but the size of the sperm is very small and can only be seen under a microscope. Normal sperm are very active and have good mobility, and can enter the female body for fertilization. Since the survival time of eggs and sperm in the body is relatively short, sexual intercourse must be performed at the right time to achieve conception[1].

condition

1. Men's testicles can produce normal sperm. The amount of semen ejaculated by a normal adult male at one time is 2-6 ml. The number of sperm in each ml of semen should be more than 60 million, more than 60% of the sperm are motile, and less than 30% of the sperm are abnormal. If the sperm does not meet the above standards, it will not be easy for the woman to become pregnant.

Schematic diagram of fertilization process

2. A woman's ovaries can produce healthy and mature eggs. For women with normal menstruation, a healthy and mature egg is released in each menstrual cycle, which gives them a chance to become pregnant. It is not easy for women to conceive due to ovarian insufficiency or irregular menstruation that causes anovulation.

3. Have normal sexual life before and after the female ovulation period to give the sperm and egg a chance to meet and fertilize. Sperm can survive in the female vagina for 1-3 days, and the egg can survive for about 1 day after being released. The female ovulates about 14 days before the next menstrual period. Conception is possible only if sexual intercourse occurs within a few days before and after ovulation. Having sex during the non-ovulatory period will not result in pregnancy.

4. The reproductive tract must be unobstructed. The male's vas deferens must be unobstructed so that sperm can be discharged through normal sexual intercourse and enter the female reproductive tract to combine with the egg. The female reproductive tract must also be unobstructed so that the sperm that enters the vagina during sexual intercourse can pass through the cervix and uterus unimpeded and reach the fallopian tube to meet the egg for fertilization. The fertilized egg can also enter the uterine cavity smoothly. If the fallopian tube is blocked, the sperm and egg will lose the opportunity to combine, so once the fallopian tube is blocked, the chance of natural conception is completely lost.