ATI RN
Human Growth and Development Final Exam
1. Why do young infants usually cry?
- A. because they are bored
- B. in shrill, piercing tones
- C. because of physical needs
- D. all night long
Correct answer: C
Rationale: Young infants usually cry because of physical needs such as hunger, discomfort, or needing to be changed. It is their way of communicating these needs to their caregivers as they are unable to do so in any other way. Choice A is incorrect because infants cry primarily to communicate physical needs, not because they are bored. Choice B is incorrect because the tone of the cry is not the reason why infants cry. Choice D is incorrect because infants cry for various physical needs, not necessarily all night long.
2. Mounting evidence suggests that __________ is a major contributor to SIDS.
- A. impaired brain functioning
- B. higher-than-average birth weight
- C. organized and patterned sleep behavior
- D. a family history of chromosomal abnormalities
Correct answer: A
Rationale: Impaired brain functioning is a major contributor to Sudden Infant Death Syndrome (SIDS). Research has shown that abnormalities in the brainstem, which controls automatic functions like breathing and heart rate, can play a role in SIDS cases. As such, mounting evidence suggests that compromised brain functioning is a significant factor in the occurrence of SIDS. Choices B, C, and D are incorrect. Higher-than-average birth weight, organized and patterned sleep behavior, and a family history of chromosomal abnormalities are not identified as major contributors to SIDS according to the provided information.
3. Nine-year-old Krista gives part of her allowance to charity and collects canned goods for the food bank through her scout troop. Krista is developing __________.
- A. pride
- B. empathy
- C. guilt
- D. inferiority
Correct answer: B
Rationale: The correct answer is B: empathy. Empathy is the ability to understand and share the feelings of others, which is a crucial social development in childhood. In this scenario, Krista's actions of giving to charity and collecting goods for the food bank demonstrate her growing empathy towards those in need. Choice A, pride, does not capture the essence of understanding and sharing others' feelings. Choice C, guilt, is not appropriate as there is no indication that Krista feels guilty about her actions. Choice D, inferiority, is unrelated to the positive behavior displayed by Krista.
4. During the second trimester, a white, cheeselike substance called __________ emerges on the skin.
- A. lanugo
- B. corpus luteum
- C. vernix
- D. chorion
Correct answer: C
Rationale: During the second trimester of pregnancy, a white, cheeselike substance called vernix emerges on the skin of the developing fetus. Vernix is a protective layer that helps prevent the skin from becoming waterlogged during the time in the amniotic fluid. Choice A, lanugo, is incorrect as lanugo refers to the fine, soft hair that covers the body of a fetus. Choice B, corpus luteum, is incorrect as it is a temporary endocrine structure involved in the menstrual cycle. Choice D, chorion, is incorrect as it is one of the membranes that surround the embryo and later the fetus.
5. It is difficult to isolate the precise damage caused by illegal drugs during pregnancy because __________.
- A. most drug-using mothers refuse to participate in teratology research
- B. the majority of babies born to drug-using mothers do not survive for more than a few days
- C. most drug-using mothers quit using illegal drugs during the first trimester of pregnancy
- D. drug users often take several drugs, display other high-risk behaviors, and suffer from other stresses
Correct answer: D
Rationale: The difficulty in isolating the precise damage caused by illegal drugs during pregnancy is due to the fact that drug users often take several drugs, display other high-risk behaviors, and suffer from other stresses. This makes it challenging to identify the specific impact of each individual factor on prenatal development. Choices A, B, and C are incorrect because they do not address the complexity of the situation involving drug users during pregnancy. Most drug-using mothers refusing to participate in teratology research, the majority of babies not surviving, or drug-using mothers quitting during the first trimester do not directly explain the difficulty in isolating the precise damage caused by illegal drugs during pregnancy.
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