Umbilical artery

When umbilical artery ( umbilical artery ) is called a paired arterial blood vessel, which passes through the navel with the umbilical vein. The two umbilical arteries arise as visceral branches of the aorta. By forming an anastomosis with the fifth lumbar artery then creates a wall side ( parietal ) root and thus the two definitive umbilical arteries. Dragging along the urachus ( Urharngang ) to the navel and lead in the fetus deoxygenated blood to the placenta.

Since the two fifth lumbar arteries develop common iliac artery to the respective, springs the umbilical artery postnatally on both sides of the internal iliac artery, even in horses only from the internal pudendal artery. The original remote ( distal ) portion of the umbilical artery closes ( obliterated ) after birth and is ( teres ligament vesicae ) to two string-like bands, which run in the lateral ligaments of the urinary bladder. The origin near ( proximal ) section also introduces the adult nor blood and supplies the bladder ( vesical artery superior) and vas deferens, in female artiodactyls also large parts of the uterus ( uterine artery ).