What Is the Medial Umbilical Ligament?
The umbilical artery refers to the arteries that are emitted from the fetal heart during the development of mammalian embryos and transport the metabolic waste and carbon dioxide produced by the fetus to the placenta.
- Chinese name
- Umbilical artery
- Foreign name
- umbilical artery
- Issue point
- Fetal heart
- Time of occurrence
- Mammalian embryonic development
- Features
- Transport of metabolic waste and carbon dioxide in the body
- Junction
- Maternal arteries
- Detection method
- Umbilical artery blood flow detector
- The umbilical artery refers to the arteries that are emitted from the fetal heart during the development of mammalian embryos and transport the metabolic waste and carbon dioxide produced by the fetus to the placenta.
Umbilical artery overview
- Umbilical artery: It is an arterial trunk during the fetal period. After birth, the distal segment is closed to form the medial umbilical ligament. The proximal segment has a lumen that is not closed. It is connected to the initial segment of the internal iliac artery and issues 2 to 3 superior bladder arteries. Divided into the upper and middle parts of the bladder.
- A normal fetal umbilical cord consists of two umbilical arteries and one umbilical vein. The single umbilical artery (SUA) is only one umbilical artery and one umbilical vein in the umbilical cord. It is a common umbilical abnormality. Prenatal ultrasound examination The diagnosis is clear. The incidence of single umbilical artery in foreign literature is about 0.2% to 2.0%. The incidence of twin pregnancy is three to four times that of single pregnancy.
- Umbilical artery (4 photos)
Umbilical artery related diseases
- Trisomy 13 and trisomy 18 are most commonly affected, while trisomy 21 and sex chromosomal abnormalities rarely occur in the single umbilical artery. In most aneuploid fetuses with a single umbilical artery, other structural abnormalities can be detected by ultrasound. At this time, karyotype analysis should be performed. The single umbilical artery should be considered a "high risk" pregnancy for rigorous obstetric evaluation and follow-up observations, because these fetuses have congenital heart disease, premature delivery, low body weight, and hypoxia. Increased risk of kidney disease.
- The single umbilical artery interferes with the blood supply during embryonic development and can cause abnormal development of the fetal cardiovascular system, central nervous system, gastrointestinal tract, skeletal system, urogenital system, and fetal limbs.