Histology- Umbilical cord

The attached video briefly explains the histology of the umbilical cord with the help of histological diagrams. 0:02 introduction 0:14 umbilical cord 0:24 function 0:33histological diagram 0:36 Arteries 0:59 vein 1:16 botello intestinal duct 1:32Wharton Kelly 1:50 amniotic membrane 2:04 microphotograph 2:46 slide of umbilical artery 3:03 slide of umbilical vein 3:32 slide of wharton's jelly