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through the placenta and umbilical cord
After ontogeny there is maturity.
Smoking marijuana during pregnancy will increase the child's risk for developing a drug problem later in life as well as decreasing the child's motivation to succeed in life.
The first two months of pregnancy are the most important months of the pregnancy. The heart, brain, and other vital organs begin developing.
Parathyroid scans are not recommended for pregnant women because of the potential harm to the developing fetus.
differentiation. it occurs during one of the early stages of pregnancy.
HCG is a glycoprotein hormone produced during pregnancy that is made by the developing embryo after conception and later by the syncytiotrophoblast.
The proper term is "pre-natal care".
Its primary job - is to cushion and protect the developing embryo against damage while its growing.
Cerebral palsy occurs when certain areas of the developing brain are damaged. This can happen during pregnancy and during the birthing process. It can also happen due to lack of oxygen during birth.
"High concentrations may reduce the amount of oxygen available for breathing, especially in confined spaces. Hypoxia (inadequate oxygen) during pregnancy may have adverse effects on the developing fetus. Exposure during pregnancy to high concentrations of carbon monoxide or carbon dioxide, which are produced during the combustion of hydrocarbon gases, can also cause harm to the developing fetus." Propane Material Safety Data Sheet.
The embryo is obtains nutrients by drawing them from the mother's blood. Thus, whatever the mother takes in that alters chemical composition of her blood can potentially affect the embryo.