IVF Day 12: How is the embryo developing?
IVF is a kind of assisted reproduction technology, which helps couples who cannot conceive naturally realize their reproductive aspirations by cultivating fertilized eggs in test tubes and then implanting healthy embryos into their mothers. In the process of IVF development, embryo development is one of the most important stages. On the 12th day of IVF, the embryo will undergo a series of changes and development, which will be described in detail in the following four aspects: embryo morphology, organ development, cell differentiation and implantation preparation.
Embryonic morphology
On the 12th day, the embryo shape of IVF began to appear, about 0.2-0.3mm, similar to the size of broad bean. The cells that make up the embryo begin to organize into embryonic somatic cells, brain, blastoderm and chorion. Embryonic somatic cells gradually form the main body of the embryo, containing embryonic stem cells, with the potential to differentiate into different organs. The head of the embryo begins to form, the shape is more obvious, the brain blastoderm gradually develops, and neurons begin to differentiate, laying the foundation for future brain development.
In addition, the embryonic heart has also begun to form. After the development and differentiation of myocardial cells, the embryonic heart gradually becomes a complete organ. Large blood vessels gradually form and begin to flow, delivering oxygen and nutrients to the embryo. This indicates that the life activity of the embryo is further enhanced.
At this stage, the outermost chorion of the embryo has also begun to form and take root in the inner wall of the uterus, preparing for the implantation of the embryo. The chorion provides necessary conditions for the normal development of the embryo by absorbing nutrients and oxygen from the mother.
Organogenesis
On the 12th day, the organs of IVF began to develop from the abdominal cavity of the embryo. The earliest development is the digestive system, and the stomach and intestines have begun to form. The neural tube in the embryo will further develop into the spinal cord and brain, and the blood and circulatory system will gradually improve, including the development of the heart and large blood vessels.
At this stage, the reproductive organs of the embryo also began to differentiate, and the male and female sex gradually formed. The kidney of the embryo begins to excrete urine in the embryo, and eye tissues such as cornea, lens and retina are also gradually formed.
Although these organs are still small, their formation is crucial for embryonic development, providing the functional and structural basis for the survival of embryos.
cell differentiation
On the 12th day, the embryonic cells of IVF also began to differentiate into different cell types to eventually form different organs and tissues. The cells inside the embryo gradually differentiate into different types of cells, such as nerve cells, myocardial cells, digestive cells, etc.
During differentiation, cells will also move and migrate, forming different levels and organizational structures. Cell differentiation provides the basis for different tissues in the future human body to ensure the normal development of embryos.
Cell differentiation at this stage will lay the foundation for subsequent embryonic organ development and provide favorable conditions for the health of IVF.
Preparation for implantation
On the 12th day of IVF development, the embryo will be ready to be implanted in the mother's uterus. The outer chorion of the embryo fixes the embryo on the uterine wall by growing fine hairs, and begins to exchange materials with the mother. Through this exchange, the embryo can obtain the required nutrients, while removing waste and carbon dioxide.
The preparation of embryo implantation is a very important step in the development of IVF. Only after successful implantation, the embryo can further develop. If implantation fails, the developed embryo may not survive, leading to the failure of IVF.
On the 12th day of IVF, embryonic development has completed the presentation of embryonic morphology, organ development has begun, cell differentiation has gradually become clear, and embryo implantation is ready. This is an important stage in the development of IVF, marking the hope for IVF to achieve successful pregnancy. In the future, with the development of embryos, IVF may further grow smoothly and eventually be born into a healthy baby.
