which of the following statements about teratogens is not true? course hero

Which of the following is true regarding drugs as teratogens?

Which of the following is true regarding drugs as teratogens? All illegal drugs are teratogens. The FDA will not approve prescription drugs if they are teratogens. If a medical drug is a teratogen, it must be prescribed by a doctor and is not available over the counter.

Which substance is not a teratogen?

Examples of non-teratogenic agents: spermicides, acetaminophen, prenatal vitamins, using a microwave to cook food. A non-teratogenic agent is one which does not cause birth defects.

What is teratogen pregnancy?

A teratogen is any agent that causes an abnormality following fetal exposure during pregnancy. Teratogens are usually discovered after an increased prevalence of a particular birth defect. For example, in the early 1960's, a drug known as thalidomide was used to treat morning sickness.

What is one of the functions served by amniotic fluid quizlet?

What is one of the functions served by amniotic fluid? It helps keep the temperature of the prenatal world constant. Which statement about the yolk sac is true? It produces blood cells until the organs are mature enough to take over this function.

What are the 4 types of teratogens?

Additionally, teratogens may also affect pregnancies and cause complications such as preterm labors, spontaneous abortions, or miscarriages. Teratogens are classified into four types: physical agents, metabolic conditions, infection, and finally, drugs and chemicals.

Which of the following is an example of a teratogen quizlet?

Examples of Teratogens: These include pollutants, malnutrition, and stress.

What are 3 examples of teratogens?

Common teratogens include some medications, recreational drugs, tobacco products, chemicals, alcohol, certain infections, and in some cases, uncontrolled health problems in the birthing parent. Alcohol is a well-known teratogen that can cause harmful effects on the fetus after exposure at any time during pregnancy.

What are teratogens?

A teratogen is an agent, which can cause a birth defect. It is usually something in the environment that the mother may be exposed to during her pregnancy.

Can teratogens cause birth defects?

As a baby grows in the womb, teratogens may affect parts of the baby's body as they are forming. For example, the neural tube closes in the first 3 to 5 weeks of the pregnancy. During this time, teratogens can cause neural tube defects such as spina bifida.

During which stage of fetal development is exposure to teratogens most damaging?

The embryonic period, during which organogenesis takes place, occurs between implantation at around 14 days to around 60 days postconception. This is usually the most sensitive period to teratogenesis when exposure to a teratogenic agent has the greatest likelihood of producing a malformation.

During which stage of fetal development is exposure to teratogens most damaging quizlet?

- The effects of a teratogenic agent are worst during the critical period when an organ system grows most rapidly. - Organogenesis takes place during the embryonic period (weeks 3-8 of prenatal development).

What is the most widely used potent teratogen?

Perhaps the most famous (or infamous) teratogen is thalidomide, a sedative that was taken by thousands of pregnant women during the early 1960s. Sometimes, however, the deleterious effect of a teratogen does not appear until many years after the mother has been exposed.

What stage of pregnancy are teratogens most harmful?

Time of exposure: Teratogens are most harmful early in pregnancy, starting about 10 to 14 days after conception to about 8 weeks into pregnancy. Genetics: Sometimes, the pregnant person's or the baby's unique genetics protect them or make them more vulnerable to certain teratogens.

How can teratogens be avoided during pregnancy?

Do not smoke, use drugs or consume alcohol during pregnancy – These teratogens greatly increase the risk of fetal birth defects and other life threatening conditions. With this in mind, avoid exposure to second hand smoke, given that it can also adversely affect the health and welfare of an unborn child.

Do teratogens affect the mother?

A teratogen is something that can cause or raise the risk for a birth defect in a baby. They are things that a mother may be exposed to during her pregnancy. Teratogens include: Some medicines.

Is folic acid a teratogen?

Folate deficiency has a well-established teratogenic effect, leading to an increasing risk of neural tube defects. This paper highlights the most recent medical literature about folate deficiency, be it maternal or paternal.

What are teratogens in the womb?

B) Teratogens are recessive genes that affect the child in the womb. FEEDBACK: Terotogenes include drugs, alcohol, chemicals, bacteria, and viruses that impair development in the womb. Synaptic pruning is: A)the brain's way of doing away with synaptic connections that are not being used .

Who was the first theorist to argue that developmental changes occur throughout the life span?

FEEDBACK: Ericson was among the first theorists to argue that important developmental changes occur throughout the life span.

What hormone is related to social behavior and plays a role in maternal tendencies and feelings?

FEEDBACK: The hormone oxytocin is related to social behavior and plays a role in maternal tendencies and feelings.