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How would harmful substances in the mothers blood reach the embryo in her uterus?
Harmful substances in the mother's blood can reach the embryo in her uterus through the placenta. The placenta acts as a barrier between the mother and the embryo, but certain toxic substances can cross this barrier and enter the embryo's bloodstream, potentially causing harm to the developing fetus.
Why is the placenta not an effective barrier against substances that harm the fetus?
The placenta is not an effective barrier against harmful substances because it is designed to facilitate the exchange of nutrients and waste between the mother and fetus. Many toxins, drugs, and infections can cross the placental membrane due to their small size or lipid-soluble nature. Additionally, certain pathogens can exploit mechanisms within the placenta to gain access to the fetal environment. As a result, substances that may harm the fetus can often bypass the protective functions of the placenta.
German measles is a disease that can harm an embryo if the mother is infected in the early stages of pregnancy because the virus that causes German measles is able to?
pass across the placenta
Can pepto-bismol harm an embryo?
http://www.xula.edu/cop/documents/OTCDrugsinPregnancy.pdf In table 4 the paper state that the ingredients do cross the placenta and thus are NOT recommended for usage during pregnancy. They do not have specific data to state if it harms the fetus or not.
How does alcohol affect an embryo?
Alcohol can harm an embryo's development by crossing the placenta and affecting the baby's growth and organ development. It can lead to fetal alcohol spectrum disorders (FASD), causing physical, behavioral, and intellectual disabilities. It's best to avoid alcohol during pregnancy to protect the health of the embryo.
You ate one hot dog during your early pregnancy does this harm your embryo?
No.
Is getting abortions a harm to the baby or parent?
Not to the woman but the embryo dies of course.
Placenta formation?
Many people have mistaken ideas about how a growing embryo eats and breathes in the uterus.From the earliest stages of its development, the growing embryo requires nutrition and oxygen, and a disposal system for the waste products of its own metabolism. All of this is accomplished by the placenta, which allows the growing embryo to eat and breathe while in the mother's uterus.To get some perspective on how the placenta began, let's go back to Day 8. This hollow ball of cells moving through the uterus is the blastocyst, searching for an implantation site. Here you see its outer layer beginning to extend out and implant in the uterine lining, searching for the uterine blood vessels that would nourish it throughout the pregnancy.As it went deeper, a single layer of cells from the mother's uterine lining surrounded it, so that it would be protected from harm. On Day 9, as it grew larger and more complex, the blastocyst became an embryo. Here it's about the size of a pinhead.Also on Day 9, the outer layer of the embryo developed spaces called lacunae. The lacunae filled up with blood from the mother's uterine lining.On Day 13, small projections from the embryo's chorionic layer reached out into the uterine lining. The chorionic layer is one of the membranes that surround the embryo and help it implant.On Days 15 through 21, blood vessels began to form beneath this chorionic layer.Around Day 21, the embryo's blood stream and the mother's blood stream were in such close contact that nutrients and oxygen could cross from mother to embryo. This was how the embryo first got its food and air from the mother, and technically this is when the placenta began to function.Let's magnify this area so you can see what we're talking about. Here you see a vein and an artery from the embryo in close contact with the blood in the mother's uterine lining. Inside the blood vessels, you can also see red blood cells, which carry oxygen.The two blood streams are separated by a thin collection of tissues in the placenta called the blood barrier. This barrier permits small particles like nutrients and oxygen to pass from the mother to the embryo, (pause) and allows waste products to pass from the embryo back to the mother. The blood barrier also prevents many large or potentially harmful particles from entering the embryo's blood stream. Notice that the red blood cells do not cross from the mother's blood stream to the embryo's.You may be wondering how a mother's blood cells could be harmful to her growing baby, and why it's important to keep the two blood streams separate. If the mother's blood type is RH negative, and her embryo's blood type is RH positive, then the mother's antibodies would treat the embryo as an invading foreign organism, and try to destroy it.Now you can see why the placenta and its blood barrier are important for supplying the growing embryo with nutrition and oxygen, removing its waste products, and preventing harmful substances from getting into its blood stream.Reviewed ByReview Date: 09/16/2008Dan Sacks MD, FACOG, Obstetrics & Gynecology in Private Practice, West Palm Beach, FL. Review provided by VeriMed Healthcare Network.
Can you drink soda if you have a little bleeding in your placenta?
Soda wont harm you or change the bleeding one bit.
Would the separation of an egg and it's polar body soon after fertilization harm the development of an embryo?
No, the separation of an egg and its polar body after fertilization does not typically harm the development of the embryo. The polar body is a byproduct of egg cell division and its removal does not affect the genetic material necessary for embryo development.
Can intercourse causes harm to sperm during very very early pregnancy?
Do you mean can intercourse cause harm to the developing embryo? If a woman has unprotected sex with more than one man, the sperm that was in the vagina and uterus first - will spread a type of antibodies to fight off the new sperm, this happens prior to conception. Soon after conception your progesterone levels start rising to protect the developing embryo. This will cause the cervix to produce a mucous plug that has antibodies, which prevent germs, viruses and even sperm from gaining access to the baby and the placenta.
Can rough sex within two weeks of conception harm an embryo?
No, sex is safe during pregnancy.
