__________ doubles the risk of SIDS.
- A. Failure to tightly swaddle an infant during sleep
- B. Use of a pacifier or a security blanket
- C. Placing an infant to sleep on his back
- D. Cigarette smoking by a caregiver
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
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The embryonic disk __________.
- A. becomes the new organism
- B. is the outer ring of cells on a blastocyst
- C. has a good chance of survival outside the womb
- D. is a protective membrane that surrounds the amnion
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which statement about prenatal rubella is true?
- A. The greatest damage occurs when rubella strikes during the fetal period.
- B. The organ damage inflicted by prenatal rubella can lead to lifelong health problems.
- C. Routine vaccination has made new rubella outbreaks extremely rare worldwide.
- D. Infection during the embryonic period is less harmful than during other prenatal periods.
Correct Answer: B
Rationale: The statement that the organ damage inflicted by prenatal rubella can lead to lifelong health problems is true. Rubella infection during pregnancy can cause serious harm to the developing fetus, including organ damage, deafness, heart defects, and intellectual disabilities. This highlights the importance of prevention and vaccination to protect both pregnant women and their unborn babies from the harmful effects of rubella.
What is one strength of the cross-sectional design?
- A. It provides evidence about individual trends.
- B. It cannot be threatened by cohort effects.
- C. It is not plagued with dropout or practice effects.
- D. It permits longitudinal comparisons.
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
The __________ reflex helps a newborn find the nipple.
- A. rooting
- B. Moro
- C. Babinski
- D. tonic neck
Correct Answer: A
Rationale: The rooting reflex is the correct answer. This reflex helps a newborn baby find the nipple by turning their head and opening their mouth when their cheek is stroked or touched. This is crucial for the baby to locate and latch onto the mother's breast for feeding. The rooting reflex typically disappears around 4 months of age.
Which individual is most likely to experience the greatest percentage of REM sleep?
- A. Sammy, a preschool child
- B. Jake, a full-term newborn
- C. Sarah, a teenager
- D. Cheryl, a preterm newborn
Correct Answer: D
Rationale: Preterm newborns, like Cheryl, experience a higher percentage of REM sleep compared to full-term newborns. This is because REM sleep plays a critical role in brain development, and preterm infants have an increased need for brain development due to their early arrival. Therefore, Cheryl, as a preterm newborn, is most likely to experience the greatest percentage of REM sleep among the individuals listed.