Fertilization is the time when sperm can enter the egg and give birth to a gypsy, which will develop and form the embryo and fetus, which is considered a baby.
Fertilization occurs in the fallopian tubes and the gypsy is shared if you have just released the uterus. All right, it is implanted in the uterine endometrium and this is where reproduction officially occurs, 6 to 7 days after fertilization.
- Human fertilization occurs when a sperm enters the egg in the first part of the fallopian tube.
- Which ensures that the woman feels embarrassed.
- When a sperm can enter the egg.
- Its wall immediately prevents the entry of other sperm.
A single sperm passes through the membrane and carries 23 male chromosomes; these isolated chromosomes are immediately combined with the other 23 chromosomes of the woman, forming a normal complement of 46 chromosomes available in 23 pairs.
This is the beginning of the cell multiplication process, the end result of which is the birth of a healthy baby.
In vitro fertilization (IVF) is when the doctor inserts the sperm into the egg in a specific laboratory. As long as the doctor observes that the zygote is growing well, it implants itself in the inner wall of the woman’s uterus, from where it can continue to grow until it is ready for delivery. This process is also called artificial insemination.
The signs and symptoms of fertilization are very subtle and the woman usually does not feel them; however, mild colic and small pink bleeding may occur, suggesting that the embryo implantation process is underway. In most cases, women only experience symptoms within a few weeks of birth. Learn all the symptoms of fertilization and how to confirm the embargo.
Embryonic development occurs from the nest to the 8th week of gestation, in this phase the formation of the placenta, the umbilical cord and the contour of all organs takes place. The 9th week of gestation is called an embryo and embryonic fetus, after 12th. week of placental exit, is sufficiently developed to provide all the nutrients needed for the development of the fetus.
The placenta is formed by a maternal component of large and multiple layers, called placental breasts, through which maternal blood continuously circulates; And by a fetal component, which is mainly represented by a large mass of placental hairs that surpasses the placental breasts and through which fetal blood circulates.
Nutrients spread maternal blood through the lining of the placenta to fetal blood, passing through the umbilical vein to the fetus.
Fetal excretions, such as carbon dioxide, urea and other substances, are spread from fetal blood to maternal blood and eliminated outdoors by the mother’s excretory functions. The placenta secretes extremely high levels of estrogen and progesterone, approximately 30 times more estrogen secreted by the laute. approximately 10 times more progesterone.
These hormones are very important for the development of the fetus; during the first few weeks of delivery, the placenta also secretes another hormone, chorionic gonadotropin, which stimulates the yellow body and continues to secrete estrogen and progesterone during the first phase of delivery.
These yellow body hormones are essential for continued pregnancy during the first 8 to 12 weeks. After this period, the placenta secretes sufficient amounts of estrogen and progesterone to ensure the maintenance of pregnancy.
The baby is ready to be born after 38 weeks of gestation, although this period is more common than a healthy baby. However, the baby may be born after 37 weeks of gestation without being considered premature; on the other hand, it can also last up to 42 weeks, considering that this is a normal situation.