Does fetal formation start in the nose first?

No, the fetus first develops internal organs and some organs and tissues, and then **, cells, blood vessels, hair, nails, etc. In the early stages of pregnancy, a critical period of fetal development, pregnant women should consume balanced nutrition to ensure the development of the fetus.

Every step of the fetal development is crucial, the more we grow up, the more we understand, health and peace is the most precious gift from God, every pregnant mother is concerned about the growth and development of their fetus, and often through the prenatal examination to understand what step their baby is now developing, so, let's understand, when does the fetal nasal bone develop?

The study of the normal fetal nasal bone development of Chinese people shows that the normal fetal nasal bone length increases from 15 weeks to 23 weeks of gestation, and the fetal nasal bone length increases with the increase of gestational age, showing a linear relationship. During pregnancy, you need to go to the hospital regularly to check the development of the fetus, as long as the fetus grows healthily, it is fine, it is recommended to eat more fresh vegetables and fruits during pregnancy, exercise appropriately, and enhance physical fitness. Prenatal education can be carried out appropriately after the second trimester, which is good for the baby's brain development.

Usually develop good living habits, don't stay up late, exercise appropriately, and enhance physical fitness. Fetal nasal bone detection method: abdominal routine ultrasound examination first, showing the median sagittal section of the fetal head, so that the fetal head faces the probe, there is no hand or umbilical cord in front of the probe, the angle of incidence of the sound beam is as perpendicular to the long axis of the nasal bone as possible, the slight deflection and lateral motion probe is conducive to distinguishing the boundary of the nasal bone, when the normal nasal bone and its top ** are two hyperechoic isolines, it is the median sagittal section of the nasal bone.

Care should be taken to avoid misdiagnosis of the frontal process of the upper collaroid bone as the nasal bone due to probe movement or oblique incidence. The transverse section of the nasal bone is a cross-section through the level of the eyeball, and the sound beam is scanned perpendicular to the frontal direction, revealing the arched structure of two nasal bones in front of the nasal tip and medial to the frontal process of the upper collar bone. When the fetus is 24 weeks old, it is considered normal for the nasal bone to be millimeter long, please rest assured; At this time, it is important to pay attention to the rationality of the diet, pay attention to good rest, appropriate exercise, and maintain a good mood.

If the fetus is tested for nasal bone dysplasia, it is a congenital developmental abnormality. There are many causes of abnormal fetal development, such as abnormal fetal development, chromosomal abnormalities, and viral infections. Three-dimensional B ultrasound shows nasal bone dysplasia, fetal nasal bone dysplasia suggests the possibility of fetal chromosomal abnormalities, you should choose a high-level hospital, do it again, if it is really nasal bone dysplasia, do further examinations, such as chromosome examination, and/or re-examination color ultrasound.

If the fetus has nasal dysplasia, it indicates the possibility of trisomy 21 syndrome, which should be taken seriously and re-examined in a specialized pediatric hospital. Causes of fetal dysplasiaFetal dysplasia generally refers to the size of the fetus being too large or too small, and the fetus is a more serious problem. Pregnant women should receive various examinations during pregnancy on time according to their physical condition and reaction to avoid the occurrence of fetal cessation of development.

The possibility of congenital abnormal development of the nasal bone, the cause of formation should be caused by genetic mutations and other reasons, fully relax yourself, and you should go to a regular hospital for ** re-examination to determine.