The umbilical cord is attached to the placenta and the placenta is attached to the wall of the uterus
the placenta, it feeds the baby, through the umbilical cord.
the umbilical cord connects the baby to the placenta
the placenta
The placenta.
The "Umbilical cord".
not sure what you mean by "which of these" but the umbilical cord connects the embryo to the mother.
The umbilical cord contains blood vessels which carry substances to and from the placenta and thence from the mother.
The umbilical cord.
umbilical cord
umbilical cord
The umbilical cord.
The umbilical cord. The umbilical cord has the function of sending blood to the baby and returning blood from the baby after it has been utilized. There are two arteries in the umbilical cord that do this.
The two structures that are connected by the umbilical cord are the embryo and the placenta. The umbilical cord is also known as the navel string or birth cord.
The 'umbilical cord' see the wiki article: http://en.wikipedia.org/wiki/Umbilical_cord
The embryo gets rid of waste when the mom feels sick and vomits.
The placenta, cord, embryo are all devoloping at the same time.