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What way does blood normally pass across the placenta?
blood does not pass across the placenta
How does the addiction of drugs from the mother get to the baby?
Drugs in the mother's bloodstream pass across the membrane of the placenta, and transfer to the unborn baby's blood by the umbilical cord, which connects the baby to the placenta.
Can red blood cells enter the body of a fetus?
To be a Feotus the baby must still be in the womb and is therefore still connected to its mother via the Placenta from which it receives oxygen and nutrients. Reb blood cells do not travel across the membranes of the placenta and therefore cannot pass between mother and foetus. This is because the placenta it effectively a loarge capillary bed from the foetus aligned with one from the mother. Just like in any other cappilary the red blood cells are far too large to pass across the vessel walls.
What are the three harmful things that can pass across the placenta to the fetus?
alcahol canser and diseses
Through which part of the body can harmful substance such as nicotine pass from the mother's blood to the baby's blood?
placenta
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.
What happens to a baby's blood as it passes through a placenta?
diffuse across the placental membranes into the mothers bloos.
What are the things that can pass across the placenta to the fetus?
Oxygen, Nitrogen, Carbon dioxide, Nutritions and alcohol can pass. And only one type of antibodies can pass which is the IgG. Viruses can pass like HIV and HBV (Hepatitis B virus) that's why the affected mothers usually have affected babies.
How does food pass through the mother to get to the fetus to feed of off?
The baby is connected by the umbilical cord to the placenta. The placenta is attached to the inside of the womb. Blood carries food through the blood vessels in the wall of the womb and the blood vessels of the placenta absorb the food.
What structure carries blood between the fetus and the placenta?
Umbilical Cord
What is the name of the rope like structure through which blood vessels pass and by which a developing mammal is connected to the placenta?
The umbilical cord.
What substances pass through the placenta?
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).
