How long does it take for sperm and egg to combine

How long does it take for sperm and egg to fuse? The whole process of sperm and egg fusion is called sperm-egg fusion. Sperm-egg fusion takes about 24 hours. When an activated male sperm enters the zona pellucida of the egg, sperm-egg fusion begins. When the sex chromosomes of the sperm and egg fuse together, it means that sperm-egg fusion is in progress.

During intercourse, the male ejaculates into the female vagina. The male sperm moves forward with the help of the shaking of the tail end and quickly swims to the cervical canal. The male sperm releases protein dissolving enzymes to dissolve the cervical mucus and moves from the uterine cavity to the belly of the fallopian tube. At the final destination - the belly of the fallopian tube, it waits to fuse with the egg cell. It takes only a few minutes for the male sperm to reach the bilateral fallopian tubes from the vagina at the fastest, 4-6 hours at the latest, and generally 1-1.5 hours.

How long does it take for pregnancy to occur after the fusion of sperm and egg? This is also a question that many female friends who want to have a baby are very concerned about. Let's learn about it together.

1. It takes about 24 hours for sperm and egg to combine. When a capacitated male sperm enters the zona pellucida of a secondary coil oocyte, sperm and egg combination has just begun. When the sex chromosomes of the ovum pronucleus and sperm pronucleus combine together, it means that sperm and egg combination has taken place.

2. During the cleavage and blastocyst production period, the somatic cells of the sperm and egg undergo metabolic changes, and the trophoblast cells are covered by the protruding adhesions above the adjacent somatic cells. Since the surface of somatic cells can transmit the natural environment to the test tube embryo, the changes in the surface of somatic cells can be described by the intake of nutrients, division, preparation for embryo implantation or mitosis.

3. After the sperm and egg combine in the bilateral fallopian tubes, they break down into two somatic cells 36 hours later, and break down into 16 somatic cells 72 hours later, which are called morulas.

4. On the 4th day after fertilization, the somatic cell mass enters the uterine body and continues to grow and develop in the uterine body. At this time, the somatic cells have broken down into 48 somatic cells and become blastocysts ready to embed. The blastocyst can metabolize a growth hormone to help the blastocyst itself bury itself in the uterine wall.

5. On the 6th to 7th day after fertilization, the blastocyst has just begun to implant. The embryo implantation site is mostly in the upper 1/3 of the uterus. Embryo implantation means that the test tube embryo has been installed and has just begun to produce embryos and create a baby.

Therefore, 6-7 days after the fusion of sperm and egg, the combination of sperm and egg will start the entire process of embryo implantation. The answer to the question "how long after the fusion of sperm and egg will it take to get pregnant" is 6-7 days.