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The mother's blood supply enters the foetus via the umbillical cord and allows oxygen to diffuse from the mother's blood into the foetus.
Absolutely YES! Substances of good/bad can be transported from what is inhale by the mother to the fetus by the process of "blood flow from the mother to the fetus" or entering the umbilical cord to the fetus .
through the mothers blood stream and thus kidneys via the umbilical cord.
Umbilical Cord I think
Having a negative rh blood type can seriously affect pregnancy and should be monitored closely. The possible incompatibility between the mother and the fetus could result in the mothers antibodies attacking the fetus as if it were a virus. This can be prevented by a shot roughly 28 weeks into the pregnancy.
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it is the interface between the fetus and the mother's blood supply it acts like a filter - supplying nutrients to the fetus and disposing of waste material from the fetus to the mother all of this without actually mixing the blood of the fetus and the mother
99.9 % is removed via the blood - i.e. via the umbilical cord ... where the mother clears the blood. A tiny amount (via the kidneys) ends up in the uterine fluid surrounding the fetus.
placenta
placenta
Placenta
The mothers bloodstream then contains alcohol and that makes its way to the unborn fetus through blood and the umbilical chord.