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Questions and Answers
What is the shortest stage of prenatal development?
What is the shortest stage of prenatal development?
At what point is the organism referred to as a fetus?
At what point is the organism referred to as a fetus?
What is characterized by rapid development and organ differentiation?
What is characterized by rapid development and organ differentiation?
Which of the following is NOT a teratogen?
Which of the following is NOT a teratogen?
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Which layer of cells forms the outermost layer during embryonic development?
Which layer of cells forms the outermost layer during embryonic development?
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What major development occurs during the second trimester of the fetal stage?
What major development occurs during the second trimester of the fetal stage?
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During which prenatal stage does the organism begin to establish basic anatomy?
During which prenatal stage does the organism begin to establish basic anatomy?
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Which statement about body proportions during the fetal stage is accurate?
Which statement about body proportions during the fetal stage is accurate?
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Study Notes
Prenatal Development Stages
- The shortest stage of prenatal development is the germinal stage.
- The organism is referred to as a fetus from the ninth week of gestation onwards.
- The embryonic stage is characterized by rapid development and organ differentiation.
- The embryonic stage sees the differentiation of the three germ layers - ectoderm, mesoderm, and endoderm.
- The ectoderm forms the outermost layer during embryonic development. It will give rise to skin, nervous system, and sensory organs.
- The second trimester of the fetal stage sees significant growth in size and weight, as well as the development of sensory organs.
- The embryonic stage is when the organism begins to establish basic anatomy.
- During the fetal stage, the head is proportionally larger than the body.
Teratogens
- A teratogen is any substance that can cause defects in a developing embryo or fetus.
- Examples of teratogens include alcohol, smoking, certain medications, and some infections.
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Description
Test your knowledge on the stages of prenatal development, including the germinal, embryonic, and fetal stages. Understand the key processes that occur during each stage from conception to birth. This quiz will help reinforce your understanding of the significant changes that take place during pregnancy.
