ATI RN
Human Growth and Development Final Exam Answers
1. During the second month of pregnancy, __________.
- A. the umbilical cord first appears as a primitive body stalk
- B. touch sensitivity extends to most of the body
- C. the heart develops separate chambers
- D. the heartbeat can be heard through a stethoscope
Correct answer: C
Rationale: During the second month of pregnancy, the heart of the developing fetus begins to develop separate chambers, forming the structure necessary for a fully functioning heart. This is a significant milestone in the prenatal development process. Choices A, B, and D are incorrect because the appearance of the umbilical cord as a primitive body stalk typically occurs around week 5-6, touch sensitivity extending to most of the body is more characteristic of the end of the second trimester, and the heartbeat is usually detectable through a stethoscope around the 18th to 20th week of pregnancy, not during the second month.
2. What is the goal of applied behavior analysis?
- A. outline changes in temperament over the lifespan
- B. eliminate undesirable behaviors and increase desirable responses
- C. examine how we think about ourselves and other people
- D. synthesize information from various sources into a detailed picture of a person's personality
Correct answer: B
Rationale: The correct answer is B: "eliminate undesirable behaviors and increase desirable responses." Applied behavior analysis aims to modify behavior by focusing on eliminating unwanted behaviors and reinforcing desirable ones. It does not primarily deal with changes in temperament (choice A), self-perception (choice C), or personality traits (choice D). The approach involves techniques such as reinforcement to target specific behaviors, rather than broader cognitive processes or personality characteristics.
3. Which statement about epidural analgesia is true?
- A. It numbs the entire lower half of the body.
- B. It limits pain reduction to the pelvic region.
- C. It strengthens uterine contractions.
- D. It shortens the length of labor.
Correct answer: B
Rationale: The correct statement about epidural analgesia is that it limits pain reduction to the pelvic region by blocking nerve signals from that specific area, providing pain relief during labor and delivery. Choice A is incorrect because epidural analgesia does not numb the entire lower half of the body. Choice C is incorrect because epidural analgesia does not strengthen uterine contractions; in fact, it may sometimes weaken them. Choice D is incorrect because epidural analgesia does not shorten the length of labor; it can sometimes prolong labor.
4. Shamona, a pregnant mother in Flint, Michigan, is concerned about the drinking water, which shows high levels of lead. Shamona should know that high levels of prenatal lead exposure are related to __________.
- A. facial abnormalities and heart defects
- B. defects of the genitals and urinary tract
- C. low birth weight and brain damage
- D. a variety of childhood cancers
Correct answer: C
Rationale: High levels of prenatal lead exposure are related to low birth weight and brain damage. Lead exposure during pregnancy can have harmful effects on the developing fetus, leading to complications such as decreased birth weight and potential long-term brain damage. Choices A, B, and D are incorrect because they do not directly correlate with the known effects of prenatal lead exposure. While lead exposure can indeed cause a variety of health issues, such as heart defects and urinary tract problems, the primary concerns related to prenatal exposure are low birth weight and brain damage.
5. This means that Andrew __________.
- A. is in good physical condition
- B. needs assistance in establishing breathing and other vital signs
- C. is in serious danger and should receive emergency medical attention
- D. was in danger at birth, but quickly recovered and is now in good physical condition Answer: B Page Ref: 95 Skill Level: Apply newborn baby’s appearance. Topic: Childbirth Difficulty Level: Difficult
Correct answer: B
Rationale: The statement "Andrew needs assistance in establishing breathing and other vital signs" refers to the initial steps taken to ensure a newborn's well-being after birth. This is a common practice to ensure that the newborn is transitioning smoothly into the outside world and is not indicative of a serious danger that requires emergency medical attention.
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