______________ is the most susceptible to teratogens.

Question

BlackTom AI · Accepted Answer

The question asks which period is most susceptible to teratogens. 
Option 1: 'Fourth trimester' — This is after birth, when teratogens cannot affect a developing fetus in utero. Therefore this choice is incorrect for fetal teratogenic susceptibility.
Option 2: 'First trimester' — The first trimester encompasses major organ formation (organogenesis). Teratogens during this window have the highest probability of causing structural malformations and critical defects, making this the correct conceptually supported choice.
Option 3: 'Second trimester' — While teratogens can still affect fetal development, most major structural abnormalities have already occurred during organogenesis in the first trimester, so the sensitivity is lower than in the first trimester.
Option 4: 'Third trimester' — Although growth and maturation continue and there can be effects (e.g., functional or growth issues), the peak vulnerability to teratogens is earlier, in the first trimester, making this less susceptible in comparison.
In sum, the rationale hinges on the concept of organogenesis driving peak teratogenic risk in early pregnancy, which is why the first trimester is identified as the most susceptible period.

BIO 132-Introduction to Nutrition-931 Exam 4

______________ is the most susceptible to teratogens.

View Explanation

Log in for full answers

Similar Questions

The embryonic period is the most sensitive time for teratogen exposure.

True or false? If a teratogen is introduced after a particular organ has formed, it may not have much of an effect on the structure of that particular organ.

Children whose mothers drank alcohol during pregnancy often have a specific set of facial features, may have heart defects, and brain damage. Children whose mothers took thalidomide for morning sickness may have malformed limbs. These examples illustrate

Which of the following options is an accurate description of the effects of teratogens?

What is a teratogen?

Teratogens ____.

What is the term for anything that damages or interferes with the development of an embryo of fetus?

27. Birth defects may be caused by a variety of environmental agents, called _________________, which include some bacteria and viruses, various drugs and chemicals, and radiation.

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler