Khan Academy on a Stick
Umbilical vessels and the ductus venosus
Watch as fetal blood goes through umbilical vessels and takes a shortcut through the Ductus Venosus to make it back to the heart. Rishi is a pediatric infectious disease physician and works at Khan Academy.
The video could not be loaded, either because the server or network failed or because the format is not supported.
If the above player doesn't work, try this direct link.