Fertilization

Fertilization is the first stage of embryogenesis, as a result of which the union of male and female sex cells leads to the appearance of a diploid ovum, the zygote.

Perhaps you will be interested to know how this egg turns into a blastomer, and the blastomer into a trophoblast and an embryoblast, not necessarily. And most likely, you are not interested in what morphological changes occur in the embryonic mesoderm during gastrulation ...

But those who are still unsuccessfully trying to become a mother, as well as those who want to avoid unwanted pregnancy, the information in this section will be useful. Fertilization occurs only in favorable conditions.

How does alcohol affect conception?

Alcohol consumption can have a negative impact on conception and reproductive health in general.

Home pregnancy test with iodine: how to do and check?

The absence of menstruation on time causes joy in some women, while others are frightened. In the modern world, it is not difficult to determine whether pregnancy has occurred; special tests are sold in pharmacies.

Basal temperature immediately after ovulation

At first glance, it seems like a useless exercise to measure your basal temperature, but in fact, this indicator will allow you to plan your life.

Pregnancy after laparoscopy

Pregnancy is a natural and expected process in the female body. However, not all women are lucky enough to get pregnant on the first attempt at conception: many have to wait months and even years to become a mother.

What is ovulation in women?

Every month, a woman’s body lives according to rhythms determined by nature; all biological processes must occur in a given mode, preferably without failures or changes.

What is ovulation?

The fact of pregnancy, or more precisely conception, is the fusion of a sperm with a mature female egg

Conceiving a child: tips and guidelines

If parents care about the future of their son or daughter, they must, first of all, take care of themselves, since they are the ones who lay the basic foundation that will become the basis for the normal development of the baby in the future.

The fetal endocrine system

The formation of most hypothalamic hormones begins in the intrauterine period, so all hypothalamic nuclei differentiate by 14 weeks of pregnancy. By the 100th day of pregnancy, the formation of the portal system of the pituitary gland is completed, and the hypothalamic-pituitary system completely completes morphological development by 19-21 weeks of pregnancy.

The development of the human embryo

The first week of embryo development is the period of cleavage (division) of the zygote into daughter cells. During the first 3-4 days, the zygote divides and simultaneously moves along the fallopian tube towards the uterine cavity. As a result of the division of the zygote, a multicellular vesicle is formed - a blastula with a cavity inside (from the Greek blastos - sprout).

Pregnancy and fertilization

Most doctors consider the first day of the last menstrual period to be the beginning of pregnancy. This period is called the "menstrual age"...