The process of pregnancy is the process of sperm and egg combining to form a fertilized egg. How long does it take for sperm and egg to meet? How long does it take for sperm and egg to combine and become pregnant? Presumably, this is the most concerning issue for all couples preparing for pregnancy. Today, Baike will learn about it together with everyone.
How long does it take for sperm and egg to combine
The process of combining sperm and egg is called fertilization. The fertilization process takes about 24 hours. When an energized sperm enters the zona pellucida of the egg cell, the fertilization process begins. When the chromosomes of sperm and egg fuse together, it marks the completion of the fertilization process.
During sexual intercourse, the man ejaculates into the woman's vagina, and the sperm moves forward by swinging its tail and quickly swims towards the cervical canal. Sperm releases proteolytic enzymes to dissolve cervical mucus, which travels from the uterine cavity to the ampulla of the fallopian tubes. At the final destination - the ampulla of the fallopian tube, wait to combine with the egg. The fastest time for sperm to reach the fallopian tubes from the vagina is only a few minutes, the latest is 4-6 hours, and generally 1-1.5 hours.
How long does it take for sperm and egg to combine and become pregnant
1. The fertilization process takes about 24 hours. When an empowered sperm enters the zona pellucida of a secondary oocyte, the fertilization process begins. When the chromosomes of the egg nucleus and sperm nucleus fuse together, it marks the completion of the fertilization process.
2. During cleavage and blastocyst formation, the cells of the fertilized egg undergo metabolic changes, and the trophoblast cells adhere to the inner surface of protrusions covering adjacent cells. Because the cell surface can transmit environmental influences to the embryo, changes on the cell surface can be explained by nutrient uptake, differentiation, preparation for implantation, or mitosis.
3. After 36 hours, the fertilized egg divides into 2 cells in the fallopian tube, and after 72 hours, it divides into 16 cells, which is called a morula.
4. On the fourth day after fertilization, the cell mass enters the uterine cavity and continues to develop within it. At this point, the cells have divided into 48 cells and become blastocysts ready for implantation. Embryos can secrete a hormone that helps them bury themselves in the endometrium.
5. On the 6th to 7th day after fertilization, the blastocyst begins to implant. The implantation site is usually located in the upper one-third of the uterus. The completion of implantation means that the embryo has been placed and the placenta has begun to form, giving birth to the fetus.
