umbilical artery

(redirected from Obliterated umbilical artery)
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um·bil·i·cal ar·ter·y

[TA]
before birth this artery is a continuation of the internal iliac; after birth it is obliterated between the bladder and umbilicus, forming the medial umbilical ligament, the remaining portion, between the internal iliac artery and bladder, being reduced in size and giving off the superior vesical arteries.
Synonym(s): arteria umbilicalis [TA]

umbilical artery

the first branch of the anterior trunk of the internal iliac artery and the origin of the superior vesical artery. In the fetus, the umbilical artery is large and carries blood from the fetus to the placenta. After birth, the vessel closes distally to the origin of the superior vesical artery and eventually becomes a solid fibrous cord, the medial umbilical ligament.

um·bil·i·cal ar·te·ry

(ŭm-bil'i-kăl ahr'tĕr-ē) [TA]
Before birth, a continuation of the internal iliac; after birth it is obliterated between the bladder and umbilicus, forming the medial umbilical ligament, the remaining portion, between the internal iliac artery and bladder, being reduced in size and giving off the superior vesical arteries.
Synonym(s): arteria umbilicalis [TA] .

umbilical artery

In the embryo, either of a pair of arteries that originate in the embryonic aortas (the dorsal aortas) and that carry blood from the embryo to the yolk sac and the chorion. In the adult, the lumen of the umbilical arteries disappears and the arteries become fibrous cords, called the medial umbilical ligaments, along the inner surface of the abdominal wall.
See also: artery