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Toxins can enter the fetus by?
blood flow from the mother to the fetus
What maternal conditions that interrupt oxygen flow can cause mental retardation in the fetus?
When the mother has high blood pressure (hypertension ) or blood poisoning (toxemia), the flow of oxygen to the fetus may be reduced, causing brain damage and mental retardation.
Toxins can harm a developing fetus?
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 .
Why should not coffee for pregnant lady?
Coffee has caffeine which can constrict blood vessels and alter the blood-flow to the fetus.
Does marijuana restrict blood flow?
it increases blood flow. that's what gets you high.
What does a fetus takes from the mother blood?
The blood is "grown" by the fetus along with the organs and bones. The fetal blood supply is separate from the mother's. The two blood systems interact through the placenta - oxygen and food pass though to the fetal blood from the mother, waste products flow from the fetus to the mother.
How does the ductus arteriosus affect the path of blood through the fetal heart?
It is an alternate way for the blood to flow during fetus development. The alternate blood flow before birth is necessary because the fetal lungs are not yet functioning.
How do cigarettes effect pregnancy?
Cigarettes are harmful to the development of a fetus, because they create a degree of carbon monoxide poisoning in the mother, which reduces available oxygen to both mother and fetus, and because nicotine is also a vaso-constrictor, making blood vessels contract, thereby reducing blood flow to the fetus.
How might a pregnant woman's use of nicotine affect her child?
Nicotine constricts blood vessels and thus reduces blood flow with oxygen and nutrients to placenta and fetus.
Where does the foramen ovale allow blood flow to and from?
That is a good question! You get the oxygenated blood from the placenta via umbilical vein in case of the fetus. This vein enters the liver of the fetus. The blood then goes to right atrium of the fetus. The lungs are closed in the fetus. So the blood goes to left atrium through foramen ovale to bypass the pulmonary circulation of the fetus. After the birth of the baby, baby takes the first breath. The lungs get inflated. Blood starts to flow via lungs. This closes the foramen ovale. The marking remains there on the wall between both the atria.
Why do Mammals with a high rate of respiration need to have a high heart rate?
To have a high rate of respiration requires a high blood flow to distribute the oxygen to the tissues, this increases the heart rate it also increasing the blood flow to the tissues.
What is the foramen ovale and what is its fate after birth?
That is very good question! You get the oxygenated blood from the placenta via umbilical vein in case of the fetus. This vein enters the liver of the fetus. The blood then goes to right atrium of the fetus. The lungs are closed in the fetus. So the blood goes to left atrium through foramen ovale to bypass the pulmonary circulation of the fetus. After the birth of the baby, baby takes the first breath. The lungs get inflated. Blood starts to flow via lungs. This closes the foramen ovale. The marking remains there on the wall between both the atria.
