Generally, the latest number of days for a fertilized egg to implant is

Pregnant women must master a lot of knowledge so that they can maintain a healthy body during pregnancy because they have more knowledge. Therefore, many women want to fully understand how many days it takes for the fertilized egg to implant. The following is a specific answer. You can take a look at the introduction below.

The meeting of sperm and egg forms a fertilized egg. This process is the process of fertilization. The fertilization process takes about 24 hours. The fertilization process begins when a capacitated sperm enters the zona pellucida of a secondary oocyte. The implantation of the fertilized egg is about the 10th day after fertilization. The entire blastocyst is located in the endometrium. On the 11th day, there is a closure plug composed of small blood clots and cell fragments in the endometrium. On the 12th day, the blastocyst is almost completely covered by the proliferating epithelium and forms a small bulge. The implantation of the fertilized egg is completed.

Implantation process

The fertilized egg begins to implant around the 6th to 8th day after fertilization and is completed around the 11th to 12th day. Generally, implantation occurs slightly more often on the posterior wall of the uterine body than on the anterior wall, and more often in the midline than on the lateral wall.

1. Attachment With the partial perforation or complete disappearance of the zona pellucida, the trophoblast near one end of the inner cell mass rapidly divides and adheres to the endometrial epithelium. The tiny villi on the two opposing tissue surfaces span the gap, interdigitating extensively with each other in a finger-like manner, and then the villi intertwine with each other.

2. After the implanted blastocyst (also known as embryocyst) attaches to the endometrium, the cell membrane of the endometrial epithelial cells gradually disappears and turns into a multinucleated cell body. The trophoblast also differentiates into two layers. The inner layer retains the cell membrane and is called the cytotrophoblast; the outer layer disappears the cell membrane and is called the syncytiotrophoblast. The syncytiotrophoblast has a strong corrosive power, eroding the uterine membrane and forming a small gap, allowing the blastocyst to slowly sink under the dense layer of the endometrium. About 10 days after fertilization, the entire blastocyst is located in the endometrium. On the 11th day, there is a closure plug composed of small blood clots and cell fragments in the endometrium. On the 12th day, the blastocyst is almost completely covered by proliferating epithelium and forms a small bulge, and implantation is complete.

Generally, it takes a few days at the latest for a fertilized egg to implant. I believe that through the above introduction, you have a comprehensive grasp and understanding of these knowledge. After fully understanding these contents, it will be of comprehensive help to your maintenance in all aspects after pregnancy, as well as attention to all aspects of your body. Therefore, for many pregnant women, they must have a comprehensive understanding of the above content.