Fetal Development

The mother does. The embryo attaches to the uterine lining (called implantation) then secretes an enzyme to breakdown the cells of the lining as it burrows into the uterus. Maternal uterine cells then develop and surround the entire embryo, soon maternal blood vessels unite with the embryo to nourish it and remove waste products. This occurs about one week after fertilization and will provide nourishment throughout the first trimester until the embryo reaches the fetal stage at which time the placenta takes over through the umbilical cord.

yes and its terrible!

The whole period takes about 9 months.

breech. lol.

Edit: it does NOT mean breech ! A 'breech' baby is one that's positioned with the head uppermost in the womb !

hi im catie and 10 weeks pregnant now i had a ultra sound when i was eight weeks the heart beat was 170 the nurse said that was good ive had friends whos babys heart rate been 163 and im pritty sure thers a wide range for a good heart rate! good luck

You should be able to feel your baby move between 16-20weeks. if this isn't your first pregnancy then you will be able to distinguish 'baby' movement even earlier

/// if you do not know for sure dont answer the question,/// Research studies have shown that women who use recreational drugs during pregnancy tend to use marijuana, thinking that it won't harm the fetus as much as other illegal substances. Although no clear-cut deformity or syndrome is known to occur due to marijuana use during pregnancy (as there is from alcohol use, for example, with fetal alcohol syndrome), there are possible dangers. First of all, smoking anything during pregnancy deprives the fetus of oxygen. Just as smoking tobacco is discouraged in pregnant women, so is smoking marijuana. Smoking any type of substance interferes with the fetus's blood supply. This can mean the fetus doesn't get enough oxygen, and s/he may be born smaller in both weight and length. Smaller babies have a higher risk of other problems after birth, such as infections, severe jaundice, difficulty feeding, breathing problems, low blood sugar, difficulty regulating temperature, bleeding into the brain, and problems with vision. Secondly, marijuana can be "cut" with other substances. So the fetus may be unintentionally exposed to other potentially harmful substances in addition to marijuana. Marijuana can also be transmitted through breast milk. Tetrahydrocannabinol, or THC (the main active ingredient in marijuana), can be as much as 8 times higher in breast milk than in the mother's bloodstream. Babies whose mothers have used marijuana during pregnancy or while breastfeeding sometimes seem jittery and difficult to comfort. They may have some delay in the development of their motor skills, although studies have concluded that this delay may not be permanent. In any case, it is advisable not to smoke marijuana while breastfeeding. Since we're on the subject of substance use during pregnancy and breastfeeding, if you already drink alcohol or smoke cigarettes, it's in your baby's (and your) best health interests to stop when you are pregnant. During the nursing period, it's commonly recommended that mothers drink only modest amounts of alcohol, delay breastfeeding for 2 - 3 hours after drinking alcohol, and avoid exposing the baby to second-hand smoke. It should be noted that much of the research on the effects of prenatal exposure to marijuana has been complicated and inconclusive. This is mainly because it is difficult to isolate the effects of marijuana from other possible factors such as alcohol, other drug use, socioeconomic status, family structure, and mother's personality. All in all, the healthiest choice for you and your baby is to avoid using recreational chemicals, including marijuana, while pregnant. As difficult as it may be to change one's lifestyle, taking a break from smoking cigarettes and joints, and drinking alcohol and using other drugs, can help set your baby up for a long, healthy life.

No. The lungs of the fetus are actually filled with fluid until birth and are non-functional. The growing fetus possesses two anatomical structures called shunts that direct blood away from the developing lungs. One is called the foramen ovale, which allows passage of blood from the right to left atrium, bypassing the right ventricle and therefore the blood circulation to the lungs. The other is called the ductus arteriosus, which allows passage of blood from the pulmonary trunk to the aorta. This also reduces the volume of blood in the circulation to the lungs. Gas exchange occurs across the placenta, so any blood that reaches the fetal lungs is only used in the development of those organs.

Three Months.

Oncew the baby's heart starts beating it stays more or less the same until after it is born. It can be anywhere from 120-160 and it varies over the day.

Can obtain more oxygen from each breath of air

Can you see a babies heartbeat by looking at the mothers neck?" yes, it is said to be a myth of a old wise tale being told.

It's disputed and rather controversial. Religious denominations, countries, people differ in their opinions. Doctors vary too. It's a hot topic in the discussion of abortion. No one can truly say. First we must define 'human being'.

It is perfectly normal at twenty weeks not to feel kicking for a day, but as your pregnancy progresses, fetal movement will be more regular. Ask your doctor if you have any concerns.

anything the mother puts into her body goes to the baby in some form as nutrition. If you eat a lot of healthy foods and drink healthy drinks it benefits your baby, this is why fetal alcohol syndrome is a problem bc the baby is "drinking" also at very sensitive developmental times. If you take a pain killer or drug your baby will get some as well and bc they are so much smaller than the mother a small dose can permanently damage them or even cause stillbirth. Even ingesting chemicals like caffeine in coffee can be advised against during pregnancy.

36-37 weeks it can be shorter or longer depending on the health of the mother... usually it is around 9 months (36 weeks)

My guess is that when the baby starts clawing at your insides, that you will become aware of the existence of its fingernails.

The first stage of fetal development is the embryo stage. This is basically just the point where there are two layers of cells. From this point, the cells begin to divide, and several cells are created and begin forming the organs of the infant.

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.

Most women start to feel the baby move around 13 to 16 weeks of pregnancy. If a person is very thin, they may feel it before.

No, it is not dangerous for the unborn baby. As a matter of fact, unborn babies get hick ups themselves as well!

There are many ways that a mother can take good care of her growing fetus. She can eat right and engage in mild exercise. Additionally, she should take prenatal vitamins and go to regular checkups.