ATI RN
Human Growth and Development Final Exam Answers
1. Like longitudinal research, cross-sectional studies can be threatened by __________.
- A. practice effects
- B. participant dropout
- C. sequential timing
- D. cohort effects
Correct answer: D
Rationale: Cross-sectional studies can be threatened by cohort effects because different age groups may have experienced different historical or social contexts, influencing the results. This disparity can lead to invalid comparisons between age groups, confounding the study's findings. Option A, practice effects, refer to changes in participants' behavior due to repeated testing, not a specific threat to cross-sectional studies. Participant dropout (Option B) is a threat related to attrition in longitudinal studies, not cross-sectional studies. Sequential timing (Option C) does not pose a threat to cross-sectional studies; instead, it refers to the order of tasks in a study design.
2. The __________ reflex helps a newborn find the nipple.
- A. rooting
- B. Moro
- C. Babinski
- D. tonic neck Answer: A Page Ref: 101 Skill Level: Understand Topic: The Newborn Baby’s Capacities Difficulty Level: Moderate
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.
3. Where does the male produce sperm, and where are these glands located?
- A. penis; scrotum
- B. scrotum; penis
- C. testes; penis
- D. testes; scrotum
Correct answer: D
Rationale: The male produces sperm in the testes, which are two glands located in the scrotum. The scrotum is the external sac that houses and protects the testes, allowing for optimal temperature regulation to support sperm production. Choice A is incorrect because sperm production does not occur in the penis. Choice B is incorrect because the scrotum houses the testes, not the penis. Choice C is incorrect because sperm is produced in the testes, not the penis.
4. Which statement about the newborn baby's appearance is true?
- A. Girls tend to be slightly longer and heavier than boys.
- B. Their round faces and big eyes make adults feel like picking them up.
- C. The trunk is large in comparison to the head, and the legs are straight.
- D. On average, they are 18 inches long and 5½ pounds in weight.
Correct answer: C
Rationale: The correct statement about the newborn baby's appearance is that the trunk is large in comparison to the head, and the legs are straight. This is a common characteristic of newborn babies as their proportions are different from adults. Choice A is incorrect as there is no consistent trend of girls being longer and heavier than boys at birth. Choice B is incorrect as the perception of adults wanting to pick up babies is subjective and not a universal truth. Choice D is incorrect as the average length and weight provided may not apply to all newborn babies, as there can be variations.
5. To avoid exposure to toxoplasmosis, Kaye should ask other family members to __________.
- A. stop smoking
- B. pick up after the dog
- C. change the litter box
- D. feed the fish
Correct answer: C
Rationale: To avoid exposure to toxoplasmosis, Kaye should ask other family members to change the litter box. Toxoplasmosis is a parasitic infection that can be transmitted through cat feces, so it is important for pregnant women to avoid handling cat litter to reduce the risk of infection. Choices A, B, and D are incorrect because they are not directly related to preventing toxoplasmosis. Smoking cessation is important for overall health but not specifically to prevent toxoplasmosis. Picking up after the dog and feeding the fish are not relevant to preventing toxoplasmosis, as the infection is primarily associated with cat feces.
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