Nursing Elites

1. Which neurotransmitter is reduced in both the manic and depressive phases of bipolar disorder?

• A. Acetylcholine
• B. Dopamine
• C. Norepinephrine
• D. Serotonin

Correct answer: D

Rationale: The correct answer is D, Serotonin. Serotonin levels are reduced during both the manic and depressive phases of bipolar disorder. Acetylcholine (choice A) is not typically linked to bipolar disorder. Dopamine (choice B) and norepinephrine (choice C) are more commonly associated with conditions like schizophrenia and depression, respectively, rather than bipolar disorder. Therefore, they are not the neurotransmitters reduced in both manic and depressive phases of bipolar disorder.

2. Down syndrome is caused by ________.

• A. a chemical imbalance.
• B. a gene on the X chromosome.
• C. possessing an extra X chromosome.
• D. possessing an extra chromosome in chromosome 21.

Correct answer: D

Rationale: Down syndrome is caused by possessing an extra chromosome in chromosome 21, not by a chemical imbalance (choice A), a gene on the X chromosome (choice B), or possessing an extra X chromosome (choice C). The presence of an additional chromosome 21 disrupts the normal course of development and leads to the characteristics associated with Down syndrome.

3. What is a culture-bound disorder?

• A. It is a disorder seen universally across all cultures.
• B. It is a disorder that exists in one culture but is completely absent in others.
• C. It is a disorder that only affects children.
• D. It is a disorder found exclusively within certain age groups.

Correct answer: B

Rationale: A culture-bound disorder is a condition that is specific to a particular culture or group of cultures and is not universally recognized or experienced across different cultures. Choice A is incorrect because a culture-bound disorder is not seen universally across all cultures. Choice C is incorrect because it does not necessarily have to only affect children. Choice D is incorrect as a culture-bound disorder is not exclusively found within certain age groups, but rather tied to specific cultures.

4. What does the diathesis-stress model entail?

• A. The diathesis-stress model suggests that stress alone is sufficient to cause a mental disorder.
• B. The diathesis-stress model involves a combination of genetic vulnerability and environmental stressors.
• C. The diathesis-stress model suggests that genetic factors alone cause mental disorders.
• D. The diathesis-stress model suggests that stressors in the environment do not affect the onset of mental disorders.

Correct answer: B

Rationale: The diathesis-stress model proposes that mental disorders develop from a combination of genetic vulnerability (the diathesis) and environmental stressors. Choice A is incorrect because it states that stress alone can cause mental disorders, which is not in line with the model. Choice C is incorrect as it simplifies the model to genetic factors alone causing mental disorders. Choice D is incorrect as it suggests that environmental stressors do not play a role in the onset of mental disorders, which contradicts the essence of the diathesis-stress model.

5. Why is it particularly useful to study identical twins who were raised in different environments?

• A. Differences in brain function can be easily identified.
• B. Concordance rates tend to be higher.
• C. It is possible that the genetics of twins who have been separated have changed in ways to explain any differences found.
• D. It is possible that high concordance rates between identical twins reared together are due to their being treated more similarly than nonidentical twins.

Correct answer: D

Rationale: Studying identical twins raised in different environments allows researchers to understand the impact of genetics versus environmental factors on traits. Choice A is incorrect because differences in brain function can be influenced by a variety of factors and not solely by environmental differences. Choice B is incorrect as concordance rates tend to be higher in identical twins reared together due to shared genetics and environment. Choice C is incorrect because genetics do not change due to being raised in different environments.

Similar Questions