Your question: Which of the following is an example of an environmental toxin that can harm fetal development?

Studies have shown that virtually all pregnant women in the U.S. have measurable levels of several toxins in their bodies that pose real threats to the development of the fetus. These dangerous chemicals include phthalates, bisphenol-A (BPA) and flame retardants.

What is an example of an environmental toxin that can harm fetal development?

Exposures to environmental toxins such as lead, tobacco smoke, and DDT have been linked with an increased risk for spontaneous abortion, low birth weight, or preterm birth.

What are 4 environmental factors that can harm a fetus?

Environmental factors which have been implicated in adverse pregnancy outcome include smoking, video display terminals, anesthetic gases, antineoplastic drugs and exposure to lead, selenium and inorganic mercury.

Which is an environmental toxin that can lead to increased risks in pregnancy?

Heavy metals such as lead and mercury, organic solvents, alcohol, and ionizing radiation are confirmed environmental teratogens, and exposure could contribute to pregnancy loss. Caffeine, cigarette smoking, and hyperthermia are suspected teratogens, and the teratogenic impact of pesticides remains unknown.

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What are environmental agents that can harm the embryo or fetus?

A teratogen is an environmental agent that can cause abnormalities in an exposed fetus. The effects depend on the nature of the teratogen, the timing at which the exposure occurs and, most likely, the genetic susceptibility of the mother and/or the fetus.

What is an environmental toxin?

Broadly speaking, environmental toxins are substances and organisms that negatively affect health. They include poisonous chemicals and chemical compounds, physical materials that disrupt biological processes, and organisms that cause disease. The effects of exposure to environmental toxins are countless.

What chemicals can harm a fetus?

Chemicals to avoid when you’re pregnant or breastfeeding

  • Pesticides and herbicides. Some pesticides (bug killers) and herbicides (weed killers) are known to affect developing and newborn babies. …
  • Cleaning products. …
  • Paint. …
  • Mosquito repellent. …
  • Mercury. …
  • Arsenic-treated timber. …
  • Nail polish. …
  • Paint and lead-based products.

How do toxins affect pregnancy?

Research demonstrates that exposure to chemicals in everyday products like plastics can alter and weaken sperm, dramatically influencing the fertilized egg and development of the fetus. Exposure to toxic chemicals can also lead to testicular and prostate cancer.

What are 3 environmental factors that affect prenatal development?

Other teratogens that affect prenatal development include radiation, pollution, and infectious disease. Radiation increases the risk of childhood cancer, as well as emotional and behavioral disorders; because of this, it is recommended that pregnant women avoid x-rays unless absolutely necessary.

What are the five environmental factors?

Environmental factors include temperature, food, pollutants, population density, sound, light, and parasites.

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What are examples of teratogens?

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 and their effects?

Teratogens are drugs, chemicals, or even infections that can cause abnormal fetal development. There are billions of potential teratogens, but only a few agents are proven to have teratogenic effects. These effects can result in a baby being born with a birth defect.

Why does exposure to toxins have more devastating effects during early pregnancy than in late pregnancy?

The immature brain is far more vulnerable to toxic exposures than that of an adult. Mature brains have a barrier of cells that restrict the entry of chemicals from the bloodstream into brain tissue, but that protective barrier is absent in the fetus and only reaches maturity in the first year after birth.

What toxins can cause developmental or birth defects?

Examples of toxic chemicals that could cause birth defects include:

  • Lead.
  • Mercury.
  • Arsenic.
  • PCBs.
  • Chlorine.
  • Methyl Ethyl Ketone.
  • Cadmium.
  • Pesticides.

How do teratogens affect fetal development?

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.

How do chemical pollutants affect the entire food chain?

When the producer is eaten, the pollutant it contains is passed onto the next trophic level as it is persistent. It remains in the body tissues of the organism because it is not easily broken down. The pollutant continues to accumulate, increasing in concentration, as it moves up the food chain.

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