Oocyte, Oocyte

Oocyte, Oocyte: basic facts

An oocyte, also known as an oocyte, is an immature egg found in the ovary. It undergoes the process of meiosis, which results in the formation of a mature egg. First-order oocytes are formed already in the womb and remain in an immature state until the girl reaches puberty.

Only a small proportion of first-order oocytes persist until puberty, and only a few of them mature. During the process of maturation, the primary oocyte goes through the stages of meiosis I, as a result of which a large secondary oocyte and a polar body are formed.

After the Graafian vesicle matures, ovulation occurs when the primary oocyte bursts and exits into the abdominal cavity, from where it enters the fallopian tube. If the egg is fertilized, it completes the second meiotic division, forming a second polar body and a mature egg.

Oocytes are key cells in the reproductive process in women. They play an important role in fertilization and embryo formation. In addition, oocyte research can help combat many diseases associated with the female reproductive system.

There are many factors that can affect oocyte health. For example, age, smoking, alcohol and certain medical conditions can negatively affect ovulation and egg quality. Therefore, it is important to consult a specialist and monitor your health, especially if you are planning to become pregnant.

In conclusion, oocytes are important cells for the female reproductive system. They undergo a complex maturation process and play a key role in the fertilization process. However, in order to have healthy oocytes, you need to monitor your lifestyle and health, and also contact a specialist if necessary.



An oocyte is an undeveloped egg in a woman's ovaries. It is formed as a result of the process of meiosis from oogium, the precursor of eggs. First-order oocytes, which are formed at the end of the third month of pregnancy, remain in this stage until puberty. However, only a small proportion of these oocytes are retained and only a few of them undergo the maturation process. Oocyte maturation occurs in several stages, including meiosis I, which leads to the formation of a secondary oocyte and a polar body. After ovulation, when the oocyte leaves the ovary and enters the abdominal cavity through the rupture of the Graafian vesicle, fertilization occurs. The fertilized oocyte continues the process of meiosis and forms a mature egg, which can then be fertilized by a sperm.



An oocyte is a female reproductive cell that appears in the primary ovary of the fetus at the end of the 2nd - beginning of the 3rd months of intrauterine life and develops there until puberty. Oocytes undergo meiosis and as a result of this process, small secondary eggs and one large first polar body, as well as mature large polar bodies, are formed.

Oocytes and primary spermatozoa are laid together with the formation of primary germ cells - gonads. For the formation of eggs, a set of chromosomes is required for a set of sex chromosomes XX or XY. They are not separated yet