True about umbilical cord
Correct Answer: Right umbilical vein disappear
Description: Right umbilical vein regresses and left umbilical vein is left, umbilical cord has two umbilical aeries and the left umbilical vein. An average umbilical cord is 55cm long with a diameter of 1-2 cm and 11helices Ref: Gray's 39e/p-210-220
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Anatomy
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