Prenatal Development: The Fetal Stage

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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?

To protect the baby from falling Signup and view all the answers

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

Tonic Neck reflex Signup and view all the answers

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

To protect the eyes from strong stimuli Signup and view all the answers

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

Taste Signup and view all the answers

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

To encourage motor development Signup and view all the answers

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

Rooting reflex Signup and view all the answers

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

To keep the exploring infant away from painful stimuli Signup and view all the answers

What percentage of pregnancies result in miscarriage?

45% Signup and view all the answers

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

Early in the pregnancy, before the mother knows she is pregnant Signup and view all the answers

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

Maternal drug abuse Signup and view all the answers

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

Avoid alcohol completely Signup and view all the answers

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

Increased risk of premature birth Signup and view all the answers

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

Chemicals released by the developing fetal brain Signup and view all the answers

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

Sense of sight Signup and view all the answers

What have newborns been found to prefer the scent of?

Their mother Signup and view all the answers

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

Electrocardiogram (ECG) Signup and view all the answers

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

To detect potential birth defects and other conditions Signup and view all the answers

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

Growth and development of the organism Signup and view all the answers

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

Approximately 6 to 8 pounds Signup and view all the answers

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

Taste and smell Signup and view all the answers

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

The newborn prefers the mother's voice to that of a stranger Signup and view all the answers

When does the fetus begin to develop its sexual organs?

By the end of the 3rd month of pregnancy Signup and view all the answers

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

Teratogens Signup and view all the answers

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

Ability to see and hear Signup and view all the answers

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

The newborn prefers the languages heard in the womb over other languages 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?

6 months Signup and view all the answers