Sperm and egg combine

Pregnancy is mainly due to the combination of sperm and egg. At the same time, the combination of sperm and egg in daily life must require certain conditions, that is, combination, which is mainly the first step of conception, that is, how long does it take for sperm and egg to combine? Then the required conditions are mainly that the man's testicles can secrete normal sperm and the woman can discharge healthy and mature eggs. The environment in the uterus must be unobstructed and suitable for the implantation of the fertilized egg.

This moment in daily life is fine, but you must pay attention in time if you experience any symptoms of pregnancy. Therefore, in daily life, the combination of sperm and egg requires a lot of external conditions, which are also very critical compared to the conditions inside the body.

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 the abnormal sperm is less than 15%-20%. If the sperm does not meet the above standards, it will not be easy to make the woman pregnant.

2. Women's ovaries can release 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 with ovarian insufficiency or irregular menstruation to conceive.

3. Women should have normal sexual life before and after their ovulation period to give sperm and egg a chance to meet and fertilize.

Sperm can survive in a woman's vagina for 1-3 days, and the egg can survive for about 1 day after being released. A woman ovulates about 14 days before the next menstrual period, and conception is only possible within a few days before and after ovulation. Pregnancy is not possible during the non-ovulatory period.

4. The reproductive tract must be unobstructed.

The male's vas deferens must be unobstructed so that sperm can be discharged. The female reproductive tract must also be unobstructed so that the sperm entering the vagina can reach the fallopian tube unimpeded to meet the egg for fertilization. The fertilized egg can also enter the uterine cavity smoothly.

5. The intrauterine environment must be suitable for the implantation and development of the fertilized egg.

After the egg is fertilized, it moves toward the uterus while developing, reaching the uterine cavity after 3-4 days, and burying itself in the nutrient-rich endometrium after 6-8 days, and then continues to develop into a fetus. The development of the fertilized egg and the growth of the endometrium are carried out simultaneously. If the fertilized egg enters the uterine cavity earlier or later, the endometrium at this time will not be suitable for the fertilized egg to implant and continue to develop, and pregnancy will not be possible.

The above are the conditions for the combination of sperm and egg. The necessary conditions are mainly that the male's testicles can secrete normal sperm and at the same time that the female can discharge healthy and mature eggs. The environment in the uterus must be unobstructed and suitable for the implantation of the fertilized egg. Therefore, we still need to pay attention to the combination of sperm and egg in daily life.