Nursing Elites

1. What is the result when a single zygote separates into two parts, each developing into a separate individual?

• A. Dizygotic twin
• B. Monozygotic twin
• C. Fraternal twin
• D. Nonidentical twin

Correct answer: B

Rationale: The correct answer is B, Monozygotic twin. A monozygotic twin, also known as an identical twin, is the result when a single zygote splits into two parts, leading to the development of two genetically identical individuals. Choices A, C, and D are incorrect because they do not accurately describe the scenario where a single zygote splits into two parts to form identical twins. Dizygotic twin (Choice A) refers to fraternal twins, which result from two separate eggs fertilized by two different sperm cells. Fraternal twin (Choice C) is another term for dizygotic twins, arising from two separate zygotes. Nonidentical twin (Choice D) is a synonymous term for dizygotic or fraternal twins, indicating that they are not genetically identical.

2. How do childhood experiences influence adult psychopathology?

• A. Childhood experiences have no impact on adult psychopathology.
• B. Childhood experiences can have a profound impact on adult psychopathology.
• C. Childhood experiences are unrelated to adult psychopathology.
• D. Childhood experiences have only a minimal impact on adult psychopathology.

Correct answer: B

Rationale: The correct answer is B. Childhood experiences, such as trauma and attachment issues, can indeed have a profound impact on adult psychopathology. These experiences can shape an individual's psychological development, influencing their mental health and well-being throughout their life. Choice A is incorrect as research shows that childhood experiences do play a significant role in adult psychopathology. Choice C is also incorrect as there is evidence supporting the link between childhood experiences and adult psychopathology. Choice D is incorrect because childhood experiences can have more than just a minimal impact on adult psychopathology; they can be quite substantial.

3. How does genetic predisposition influence mental health?

• A. Genetic predisposition guarantees the development of mental disorders.
• B. Genetic predisposition plays a role but is not the sole determinant of mental health.
• C. Genetic predisposition does not influence mental health.
• D. Genetic predisposition determines mental health without exception.

Correct answer: B

Rationale: Genetic predisposition indeed plays a significant role in influencing mental health by increasing the risk of developing certain disorders. However, it is crucial to note that it is not the sole determinant. Mental health is also influenced by various environmental factors, lifestyle choices, and individual experiences. Option A is incorrect because genetic predisposition does not guarantee the development of mental disorders; it only predisposes individuals to a higher risk. Option C is incorrect as genetic predisposition does have an influence on mental health. Option D is incorrect because mental health is a complex interplay of genetic, environmental, and other factors.

4. While out for a walk, you come across a ferocious dog. You feel your heart beating faster and your palms begin to sweat. Which part of the peripheral nervous system is activated in this situation?

• A. Autonomic
• B. Sympathetic
• C. Parasympathetic
• D. Somatic

Correct answer: B

Rationale: The correct answer is B: Sympathetic. When encountering a stressful situation like a ferocious dog, the sympathetic nervous system is activated, leading to the 'fight or flight' response. This response triggers physiological changes like increased heart rate, sweating, and heightened alertness to prepare the body to deal with the perceived threat. The autonomic nervous system (Choice A) encompasses both the sympathetic and parasympathetic divisions, so it's a broader category. The parasympathetic nervous system (Choice C) is responsible for the body's 'rest and digest' functions, which are opposite to the physiological changes seen in a stress response. The somatic nervous system (Choice D) controls voluntary movements and sensory information, not the physiological responses seen in a stress reaction.

5. According to the diathesis-stress model, having a predisposition towards mental illness...

• A. Means that a person will surely develop a mental disorder in the future
• B. Does not affect the chances of developing a mental disorder
• C. Increases the chance that a person would have a mental disorder
• D. None of the above

Correct answer: C

Rationale: According to the diathesis-stress model, having a predisposition towards mental illness increases the risk but does not guarantee the development of a mental disorder. Choice A is incorrect as the model does not imply certainty. Choice B is incorrect as having a predisposition does affect the chances. Choice D is incorrect as the model does have an impact on the likelihood of developing a mental disorder.

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