Chapter 5: Threats to Prenatal Development Quiz

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Questions and Answers

During which stage of prenatal development does organogenesis occur?

  • Embryonic stage (correct)
  • Fetal stage
  • Postnatal stage
  • Germinal stage

Which of the following is a primary function of the placenta during prenatal development?

  • Producing amniotic fluid
  • Assisting in swallowing movements of the fetus
  • Developing physical structures in the fetus
  • Transferring waste from the fetus to the mother (correct)

What is a common outcome associated with Fetal Alcohol Spectrum Disorders?

  • Increased sensory experiences
  • Improved physical growth
  • Negative impact on brain development (correct)
  • Enhanced learning abilities

Why is it better for pregnant women to avoid exposure to teratogens?

<p>To prevent potential birth defects (B)</p> Signup and view all the answers

Which stage of labor involves the delivery of the placenta?

<p>Stage 3 (A)</p> Signup and view all the answers

What behavior indicates that fetuses are active contributors to their own learning in the womb?

<p>Changing sucking patterns to familiar sounds (B)</p> Signup and view all the answers

What is the function of the amniotic sac during prenatal development?

<p>Provides protection and cushioning for the developing baby (D)</p> Signup and view all the answers

During which period of prenatal development does the zygote undergo differentiation?

<p>Germinal period (A)</p> Signup and view all the answers

How many cells are there approximately after 5 days of mitosis following conception?

<p>100 cells (C)</p> Signup and view all the answers

Which structure provides the baby with oxygen and nutrients from the mother's bloodstream?

<p>Umbilical cord (A)</p> Signup and view all the answers

What is determined at the moment of conception?

<p>Genetic makeup and sex of the baby (D)</p> Signup and view all the answers

Which process involves the zygote multiplying from one cell to billions of cells within about 9 months?

<p>Mitosis (C)</p> Signup and view all the answers

At what point does the zygote attach to the uterus?

<p>After 7-10 days of cell division (A)</p> Signup and view all the answers

Which layer of cells becomes the digestive and respiratory systems during organogenesis?

<p>Endoderm (D)</p> Signup and view all the answers

What is the approximate length of the embryo at the end of the embryonic period?

<p>1 inch (A)</p> Signup and view all the answers

Which direction does growth occur during prenatal development from head to tail?

<p>Caudal to cephalic (A)</p> Signup and view all the answers

During which week after conception does the neural tube form, developing into the spinal cord and brain?

<p>4-5 weeks (D)</p> Signup and view all the answers

Which structure is responsible for providing nourishment and oxygen from the mother to the developing embryo?

<p>Placenta (D)</p> Signup and view all the answers

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