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What else can I help you with?
Why would an embryo be more susceptible than a fetus to damage by toxins?
The embryo is connected to the umbilical cord to the mother. The baby feeds on what its mother eats. Absorbs the nutrients and oxygen it needs. Drugs and other harmful substances will affect the embryo's development and it could possibly cause low birth weight, early birth. Also it will cause the embryo now a fetus have problems receiving oxygen and nutrients from its mother.
Can you use while breast feeding?
If the question is, can you use potentially harmful substances while breastfeeding, then the answer is no. Even if the substance is not passed in harmful quantities to the child through breast milk the mother could have her ability to care for the child impaired owing to the effects of the substance upon herself. This question is best discussed with a health professional, e.g. a doctor, or staff at an appropriate clinic.
Which is a substance that could be found in air water or soil that is harmful to humans or animals?
A pollutant fits that description.
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.
Does a hummingbird egg grow inside or outside their mother?
In a way, you could say "both inside and outside". The egg is produced and fertilized inside the mother. She lays the egg and incubates it so the embryo grows outside the mother and develops into the hatchling hummingbird.
Give me a sentence using embryo?
The embryo of a plant is within the seed could be a sentance. The plant embryo is the initial development stage of the plant.
Why is taste not a good way to determine if a substance is an acid?
Because acid can poison you! You could die!!!!!!!!! There are harmful chemicals in acid! If you want to determine if a substance is an acid, try pouring it into a container and see if it bubbles.
The term biodegradable means that a substance is not dangerous true or false?
False. The term biodegradable refers to a substance's ability to be broken down by natural processes, such as microorganisms, into simpler, non-harmful compounds. However, a substance being biodegradable does not automatically mean it is not dangerous, as its breakdown products could still be harmful to the environment or living organisms.
Is an abnormal craving for nonfood substance has effect on pregnancy?
It could depending on what that "nonfood" substance is, for instance if your craving paper, you could have a problem. craving certain things could be harmful to you foremost not the baby. Your stomach doesn't have the ability to digest certain things. If your very concerned consult with a doctor.
Could a fever blister affect embryo implantation?
A fever blister won't affect embryo implantation.
Why are some people born addicted to drugs?
Because if their mother's have the drug when they are pregnant, the baby could receive some of the harmful drug.
How could you define a subtance based on what you have obserbed?
A substance is a material of a particular kind or a drug that is considered harmful and whose use is controlled by law or made illegal.
