Teratogens are classified into four types: physical agents, metabolic conditions, infection, and finally, drugs and chemicals.
What are 5 types of teratogens?
Teratogenic agents include infectious agents (rubella, cytomegalovirus, varicella, herpes simplex, toxoplasma, syphilis, etc.); physical agents (ionizing agents, hyperthermia); maternal health factors (diabetes, maternal PKU); environmental chemicals (organic mercury compounds, polychlorinated biphenyl or PCB, …
What is the most common type of teratogen?
Alcohol: One of the most commonly used teratogens is alcohol, and because half of all pregnancies in the United States are unplanned, it is recommended that women of child-bearing age take great caution against drinking alcohol when not using birth control or when pregnant (CDC, 2005).
What are the 3 most common teratogens?
- angiotensin converting enzyme (ACE) inhibitors, such as Zestril and Prinivil.
- alcohol.
- aminopterin.
- androgens, such as methyltestosterone (Android)
- busulfan (Myleran)
- carbamazepine (Tegretol)
- chlorobiphenyls.
- cocaine.
What are two teratogens?
Alcohol and smoking are two common teratogens. Exposure to either of them can lead to developmental anomalies, miscarriage, stillbirth, preterm labor, and a variety of other pregnancy complications.
What are chemical teratogens?
A teratogen is an agent that can cause malformations of an embryo or fetus. This can be a chemical substance, a virus or ionizing radiation. This is closely related to a fetotoxin, an agent that causes poisoning effects on a developing fetus.
What are teratogens in psychology class 11?
teratogens environmental agents that cause deviations in normal development that can lead to serious abnormalities or death.
Is Thalidomide a teratogen?
Thalidomide is a potent teratogen that induces a range of birth defects, most commonly of the developing limbs.What Teratology means?
Teratology is derived from the Greek noun teras, meaning monster, and historically has referred to the study of malformations early in life that result from exposure to chemicals such as mercury, lead, and other complex compounds.
Is pollution a teratogen?Teratogens are factors that can contribute to birth defects which include some maternal diseases, pollutants, drugs and alcohol.
Article first time published onWhich of the following are examples of teratogens quizlet?
What are some examples of teratogens? Drugs of abuse, prescription medications, environmental contaminants, and diseases. You just studied 18 terms!
What are four environmental hazards that can affect a fetus?
These chemicals include commonly known hazards such as lead, mercury, and environmental tobacco smoke, as well as some pesticides, solvents, products containing chlorine, and other chemicals referred to as “persistent organic pollutants.” The fetus is particularly vulnerable to environmental chemicals that can disrupt …
What causes teratogenesis?
Causes of teratogenesis can broadly be classified as: Toxic substances, such as, for humans, drugs in pregnancy and environmental toxins in pregnancy. Potassium iodide is a possible teratogen. Potassium iodide in its raw form is a mild irritant and should be handled with gloves.
What are teratogens give at least 4 examples Class 11?
A teratogen is something that can cause birth defects or abnormalities in a developing embryo or fetus upon exposure. Teratogens include some medications, recreational drugs, tobacco products, chemicals, alcohol, certain infections, and in some cases, health problems such as uncontrolled diabetes in pregnant people.
What are teratogens give examples Class 11?
Teratogens are substances that may produce physical or functional defects in the human embryo or fetus after the pregnant woman is exposed to the substance. Alcohol and cocaine are examples of such substances.
What are teratogens Psych?
n. an agent that induces developmental abnormalities in a fetus.
Is Arginine an example of teratogen?
Some authors have reported some side effects of L-arginine in other studies, such as diarrhea, disturbance of acid–base balance, etc [29–31]. However, none of the 9 trials in this study described any L-arginine side effects. Additionally, no teratogenic or lethal effects were reported.
Which drug belongs to teratogen category?
Teratogenic drugs: A teratogen is an agent that can disturb the development of the embryo or fetus. Teratogens halt the pregnancy or produce a congenital malformation (a birth defect). Classes of teratogens include radiation, maternal infections, chemicals, and drugs.
What is Acephalic?
acephalic in British English (ˈeɪsɪˌfælɪk) adjective. biology. having no head or one that is reduced and indistinct.
What is teratogenesis Wikipedia?
Teratogenesis is a prenatal toxicity characterized by structural or functional defects in the developing embryo or fetus. It also includes intrauterine growth retardation, death of the embryo or fetus, and transplacental carcinogenesis (in which chemical exposure of the mother initiates cancer development in the…
Who discovered teratogenesis?
The latter part of the twentieth century saw the discovery of many teratogens. In 1941, Sir Norman Gregg (1892–1968) discovered the human rubella virus as the first human teratogen; exposure in utero led to heart defects and congenital cataracts.
What is Amelia and Phocomelia?
Phocomelia, or amelia, is a rare condition that causes very short limbs. It’s a type of congenital disorder. This means it’s present at birth. Phocomelia can vary in type and severity. The condition might affect one limb, the upper or lower limbs, or all four limbs.
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.
Is warfarin a teratogen?
Warfarin is known to be teratogenic, producing characteristic abnormalities, namely a hypoplastic nose, stippled epiphyses, and skeletal abnormalities.
Is caffeine a teratogen?
In humans, caffeine does not present any teratogenic risk. The increased risk of the most common congenital malformations entailed by moderate consumption of caffeine is very slight.
Can ozone cause miscarriage?
Exposure to common air pollutants, such as ozone and fine particles, may increase the risk of early pregnancy loss, according to a study conducted by the National Institutes of Health.
What are 2 examples of maternal infections?
Most common maternal infections (eg, UTIs, skin and respiratory tract infections) are usually not serious problems during pregnancy. Maternal infections that can damage the fetus include cytomegalovirus infection, herpes simplex virus infection, rubella, toxoplasmosis, hepatitis B, and syphilis.
What are the basic types or clusters of temperament?
As a result of the study, the psychologists determined that there are three major types of temperament: easy, difficult, and slow-to-warm-up.
What is not a good example of 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.
When is the period of greatest risk for most teratogens?
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.
What is Germinal Stage?
The germinal stage begins at conception when the sperm and egg cell unite in one of the two fallopian tubes. The fertilized egg is called a zygote. Just a few hours after conception, the single-celled zygote begins making a journey down the fallopian tube to the uterus.
