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blood does not pass across the placenta

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15y ago

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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.


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


Through which part can harmful substances such as nicotine pass from the mothers blood to the babys blood?

Harmful substances like nicotine can pass from the mother's blood to the baby's blood through the placenta. The placenta is a vital organ that provides nutrients and oxygen to the fetus while also filtering out some harmful substances. However, substances like nicotine can still pass through the placenta and affect the developing baby.


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.


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 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.


Does digested food pass from the mothers blood to the babys blood?

No, digested food does not pass directly from the mother's blood to the baby's blood. Nutrients from the mother's blood are transferred to the baby's blood through the placenta, which acts as a barrier to prevent direct mixing of blood between the mother and the baby.


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).


How is the foetus supplied with oxygen and food in the uterus?

The fetus is supplied with oxygen and nutrients through the placenta, which is connected to the mother's uterine wall. The mother's blood passes through the placenta, allowing oxygen and nutrients to pass from the mother's bloodstream to the fetus. Waste products from the fetus also pass through the placenta into the mother's bloodstream for elimination.