Which of the Following Is True About Teratogenic Effects

AThese effects can be caused by environmental chemical exposure. Teratogens are usually discovered after an increased prevalence of a particular birth defect.

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If a medical drug is a teratogen it must be prescribed by a doctor and is not available over the counter.

. Be sure to check with your physician before taking any over-the-counter. It is believed that the Y chromosome which contains fewer genes than the X may have an impact. C Smaller doses over shorter time periods have more negative effects.

Two of the leading preventable causes of birth defects and developmental disabilities are alcohol and smoking. CA rubella infection in the mother is. Unfortunately for many these include alcohol.

Drugs considered safest during pregnancy are rated category X. 4 We cannot predict with certainty what their effects will be. 1 The effects of teratogens depend on when in prenatal development exposure occurred.

A period from conception to birth. Examples of non-teratogenic agents are spermicides acetaminophen prenatal vitamines and microwave ovens. Exposure to particular teratogens is most harmful during critical periods that corresponds to organs development D.

Category B medication which is considered to have no teratogenic effects 5 According to the FDA medications can be categorized according to safety during pregnancy. D Teratogens have an equal impact on fetal development during each prenatal period. B Meiosis is initiated twice in a finite population of cells.

Male foetuses are far more likely to be affected by teratogens than female foetuses. A The harm done by teratogens is simple and straightforward. The teratogenic effects of alcohol following exposure during pregnancy and its influence on the chromosome constitution of the pre-ovulatory egg.

Prescription drugs are scored in categories A to X with category X being most. 16 34 Dose-effect curves for the induction of teratogenic effects by low-LET radiation are with one possible exception of the threshold type and the effects themselves are nonstochastic. Which of the following statements about teratogens is true.

A Oogenesis enter arrest at the 1st meiotic stage and spermatogenesis does not enter arrest. Which of the following is true about teratogenic effects. 3 Which of the following statements about gamatogenesis are True.

Alcohol use in pregnancy has significant effects on. Teratogenic agents cause approximately 7 of congenital malformations. The genetic make- up of the mother can also have an effect.

Which of the following is a true statement about the principles underlying teratogenic effects. BThe fetus is most susceptible to birth defects during the last three months of pregnancy. Hormones are heathful teratogens in any quantity C.

Being male or female. Any environmental agent that causes damage during the prenatal period is a teratogen. Teratogens are only those substances that a mother ingest.

Some mothers may be more resistant to teratogenic effects than others. Much information has emerged over the years concerning the teratogenicity of acute and chronic alcohol exposure during pregnancy. They include radiation maternal infections chemicals and drugs.

Each question will have at least one part which is true. Teratogenic effects including cleft palates open-eye skeletal malformations and decreased thymus size have been reported in the offspring of mice injected intraperitoneally during the period of organogenesis with the equivalent of 413 times the maximum human therapeutic dose of azathioprine. The field of radiation teratogenesis has been reviewed many times.

Both alcohol and its primary metabolite acetaldehyde are teratogenic. The effect of teratogen is absent if the mother was exposed to it before conception. These are agents or factors which causes malformation of an embryo.

QNo23 The term Teratogenic Effect with reference to exposure to the Hazardous Chemical means - a Effect on Genes b Effect on the unborn child c Effect on rate of Cell mutation in the body d Effect of development of the Children e Effect on individual organ in the body. 2 All of these statements about teratogens are true. 3 Susceptibility to teratogens is highest during the embryonic stage.

Teratogens include only substances that a mothers body produce. A non-teratogenic agent is one which does not cause birth defects. Each teratogen acts the same on all developing tissue.

Andor herbal supplements can add up to a toxic effect for the pregnancy and may be teratogenic. A period from birth to about age 2. 78 Exposure to teratogens after organogenesis is complete is most likely to result in A severe anatomic defects.

The harm done by teratogens is simple and straightforward. A Both statements are true. Effects include early embryonic death neonatal or early postnatal death gross malformations local morphological defects or.

Few foetuses are actually exposed to teratogens. Susceptibility to teratogens varies with the developmental stage of the fetus at the time of exposure. Teratogenic factors related to the father do not affect the developing baby.

C Differences in placental membranes can affect a fetuss exposure to a teratogen. D The time of exposure to a teratogen impacts the type and degree of damage to the fetus. Which of the following statements about teratogens is true.

C The effects of a teratogenic agent are worst during the time when the organ system grows the fastest D The effects of a teratogenic agent are affected by the embryo or fetuss genetic. C Spermatogenesis produces 4 gametesmeiosis. A A teratogenic substance will have the same effect no matter how much the embryo or fetus receives.

Therefore the answer to your question is that all teratrogens are dangerous. Teratogens have an equal impact on fetal development during each prenatal period. All of the following medications are known teratogens EXCEPT one.

B Any environmental agent that causes damage during the prenatal period is a teratogen. Teratogenicity depends upon the ability of the agent to cross the placenta. Smaller doses over shorter time periods have more negative effects.

Which of the following statements is true about teratogens. Smoking while pregnant can lead to low-birth weight premature birth stillbirth and SIDS. Males are more likely to experience damage due to teratogens than are females.

B The longer a teratorgenic substance lasts the more damage it is likely to cause. These are agents or factors which causes malformation of an embryo. Any agent that might produce a defect in an unborn child is called a tetatrogen.

A teratogenic agent is a chemical infectious agent physical condition or deficiency that on fetal exposure can alter fetal morphology or subsequent function. The genetic susceptibility of the fetus to a particular teratogenic agent will also have an effect on the final outcome.

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