Umbilical cord has:
CONTENTS OF UMBILICAL CORD: - 2 Umbilical aeries - 1 Umbilical vein - Rudimentary allantois - Remnant of omphalomesenteric / vitellointestinal duct - Whaon's jelly
1 vein and 2 aeries
2 vein and 2 aeries
1 vein and 1 aery
2 veins and 1 aery
Fetal circulation