Prenatal Development: The Fetal Stage

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Questions and Answers

Which of the following senses is the least developed in newborn infants?

  • Touch
  • Taste
  • Hearing
  • Vision (correct)

What is the approximate distance at which newborn infants can see objects best?

  • 6 inches
  • 12 inches (correct)
  • 24 inches
  • 36 inches

Which of the following reflexes is thought to help in exploratory learning?

  • Moro reflex
  • Rooting reflex
  • Blink reflex
  • Grasping reflex (correct)

What is the primary purpose of the Moro reflex in newborn infants?

<p>To protect the baby from falling (A)</p> Signup and view all the answers

Which of the following reflexes is thought to help develop hand-eye coordination in newborn infants?

<p>Tonic Neck reflex (C)</p> Signup and view all the answers

What is the primary function of the Blink reflex in newborn infants?

<p>To protect the eyes from strong stimuli (D)</p> Signup and view all the answers

Which of the following senses is most developed in newborn infants?

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

What is the purpose of the Stepping reflex in newborn infants?

<p>To encourage motor development (C)</p> Signup and view all the answers

Which of the following reflexes is thought to ensure the infant's feeding will be a reflexive habit?

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

What is the primary purpose of the Withdrawal reflex in newborn infants?

<p>To keep the exploring infant away from painful stimuli (B)</p> Signup and view all the answers

What percentage of pregnancies result in miscarriage?

<p>45% (D)</p> Signup and view all the answers

What is the most vulnerable period for many of the developing organism's organs?

<p>Early in the pregnancy, before the mother knows she is pregnant (D)</p> Signup and view all the answers

Which of the following is considered one of the greatest risk factors facing unborn children?

<p>Maternal drug abuse (D)</p> Signup and view all the answers

What is the recommended approach for expectant mothers regarding alcohol consumption?

<p>Avoid alcohol completely (A)</p> Signup and view all the answers

Which of the following is NOT a potential impact of poverty on child development?

<p>Increased risk of premature birth (B)</p> Signup and view all the answers

What triggers the muscles in the mother's uterus to start the rhythmic contractions of childbirth?

<p>Chemicals released by the developing fetal brain (B)</p> Signup and view all the answers

Which of the following sensory abilities is NOT mentioned as being well-developed in newborns?

<p>Sense of sight (B)</p> Signup and view all the answers

What have newborns been found to prefer the scent of?

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

Which of the following tests is NOT mentioned as being conducted during the first months of pregnancy?

<p>Electrocardiogram (ECG) (B)</p> Signup and view all the answers

What is the purpose of the screenings conducted during the first months of pregnancy?

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

What is the defining characteristic of the fetal stage of prenatal development?

<p>Growth and development of the organism (A)</p> Signup and view all the answers

What is the average weight of a fetus at the end of the prenatal period?

<p>Approximately 6 to 8 pounds (A)</p> Signup and view all the answers

What sense does the fetus begin to develop during the fetal stage?

<p>Taste and smell (A)</p> Signup and view all the answers

What preference does a newborn show regarding the mother's voice?

<p>The newborn prefers the mother's voice to that of a stranger (A)</p> Signup and view all the answers

When does the fetus begin to develop its sexual organs?

<p>By the end of the 3rd month of pregnancy (A)</p> Signup and view all the answers

What is the term used to refer to environmental factors that can affect the developing fetus?

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

Which of the following is NOT a characteristic of the fetus during the fetal stage?

<p>Ability to see and hear (C)</p> Signup and view all the answers

What preference does a newborn show regarding the languages heard in the womb?

<p>The newborn prefers the languages heard in the womb over other languages (D)</p> Signup and view all the answers

What is the approximate timeline for the fetus to go from weighing less than an ounce to weighing an average of 6 to 8 pounds?

<p>6 months (A)</p> Signup and view all the answers

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