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Carbon dioxide and other such waste gases diffuse from the foetus and across the placenta into the mother's blood. Urea (excretory product) also diffuses into the mother's blood. (The substances in bold will answer question).
Keira Boyle
Wiki User
∙ 11y agoMother to baby
- Nutrients - Glucose
- Oxygen
- Antibodies
- Water
- Drugs/Alcohol
- Diseases
Baby to Mother
- Urea
- Carbon Dioxide
- Other waste
NOT: Blood
Wiki User
∙ 13y agoI'm trying to answer the same question from the text book, if I'm correct, the answer shall be:
(2) carbon dioxide
Felisha Howard
carbon dioxide
Wiki User
∙ 12y agooxygen
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What two important substances pass from the mother through the placenta to the embryo?
food and water
What are substances that pass through the placenta that can harm the embryo?
Some substances are filtered but the reason some might get through is that the placenta is connected to your baby through you so in affect any harmful substances you have eg alcohol the baby will also have
Through which part can harmful substances such as nicotine pass from the mothers blood to the babys blood?
trough the placentai thinkshould be umbilical cord...... I think too
Name 2 ways in which harmful substances can be passed onto the foetus?
To my knowledge there is only one way. Across the placenta and into the foetus. Everything taken into mothers body will pass across the placenta, around the system of the foetus and even returning waste back across the placenta through the magic of Osmosis.
Does chemicals from cigarette smoke pass through the placenta to the fetus?
I am sure that it does.
How does a women pass substances into her foetus?
The fetus receives oxygen and nourishment from the placenta via the umbilical cord. Waste and carbon dioxide return to the placenta via the umbilical cord.
How is the baby fed in the womb?
Nutrients pass through the placenta into the baby through the umbilical cord.
Could toxins pass through the placenta to the embryo?
Yes, it is possible for this to happen and it can result in fetal death, miscarriage or stillbirth. However, there are several control points in the placenta to help reduce this risk, including the barriers between maternal circulation and fetal circulation.
What harmful substance can pass through the placenta to the foetus?
Ellicit drugs, alcohol and nicotine.
What way does blood normally pass across the placenta?
blood does not pass across the placenta
Can you take half a xanax at 7 months pregnant for your nerves and anxiety?
No, will pass through the placenta
Does a permeable membrane will let substances pass through it?
Yes it does permeable membranes are membranes that allows all substances to pass through.
