Tetralogy of Fallot
Tetralogy of Fallot
Tetralogy of Fallot
the left side of the heart to the right
A teratogen is a factor that causes birth defects.
Abnormal openings in the atrial septum occur during fetal development and are twice as common in females as in males. These abnormalities can go unnoticed if the opening is small, producing no abnormal symptoms
During the embryonic stage, various birth defects can occur, including neural tube defects (such as spina bifida or anencephaly), congenital heart defects, and limb abnormalities. These defects can be influenced by genetic factors, environmental exposures, maternal health, and nutritional deficiencies, such as a lack of folic acid. The embryonic stage, which spans from weeks 3 to 8 of pregnancy, is a critical period for organogenesis, making it particularly vulnerable to disruptions. Early prenatal care and appropriate interventions can help reduce the risk of these defects.
Embryonic lethal mutations are genetic mutations that prevent an organism from developing past the embryonic stage, leading to death in utero. These mutations can be caused by defects in essential genes or developmental processes, resulting in non-viable embryos. These mutations are important to study to understand gene function and embryonic development.
Abnormality can be due to abnormal heart rhythms or cardiac muscle defects.
There are thousands of identified birth defects. Birth defects are abnormal developments present at birth that can cause physical or mental disability. Some, but not all are fatal.
The period of prenatal development where major organs start developing is called the embryonic period. This stage typically occurs from about week 4 to week 8 after fertilization. This is a critical period for organ development and any disruptions during this time can lead to significant birth defects.
because the embryonic period is the time when the embryo grows up in to fetus by performing several processes, these process are so much important that if these are not happen in the mean time then the fetus may catch many deformities and anomolies .
Esophageal atresia is typically caused by the abnormal development of the fetus during pregnancy, leading to the esophagus not forming properly in the womb. Genetic factors or certain environmental influences may also play a role in its development.