Nursing Elites

1. What is the term for a fluid-filled sac in which the baby floats until just before it is born?

• A. Amnion
• B. Placenta
• C. Umbilical cord
• D. Embryo

Correct answer: A

Rationale: The correct answer is A: Amnion. The amnion is a fluid-filled sac that surrounds and protects the developing fetus in the womb. It acts as a cushion, maintaining a stable temperature and protecting the fetus from external pressure. Choices B, C, and D are incorrect because the placenta is an organ that provides nutrients and oxygen to the fetus and removes waste products, the umbilical cord connects the fetus to the placenta to facilitate nutrient exchange, and an embryo is an early stage of development before it becomes a fetus.

2. What are substances, such as viruses and drugs, that can cause birth defects?

• A. Teratogens
• B. Placenta
• C. Parturition
• D. Androgens

Correct answer: A

Rationale: Teratogens are substances that can cause birth defects, especially if exposure occurs during critical periods of development. In this context, teratogens refer to external agents that can interfere with the development of the embryo or fetus, leading to structural or functional abnormalities. Choice B, Placenta, is incorrect as it is an organ that develops during pregnancy to provide nutrients and oxygen to the fetus and remove waste products. Choice C, Parturition, refers to the process of giving birth and is not related to substances that cause birth defects. Choice D, Androgens, are male sex hormones and are not associated with causing birth defects.

3. How does the environment interact with genetic predispositions to influence mental health?

• A. The environment has no influence on mental health.
• B. The environment interacts with genetic predispositions to either enhance or mitigate mental health risks.
• C. The environment can only influence physical health, not mental health.
• D. The environment has a minimal effect on mental health outcomes.

Correct answer: B

Rationale: The correct answer is B. The environment interacts with genetic predispositions to either enhance or mitigate mental health risks. This highlights the intricate relationship between one's genetic makeup and the environmental factors they are exposed to, both contributing significantly to mental health outcomes. Choice A is incorrect as numerous studies show that the environment plays a crucial role in mental health. Choice C is incorrect as the environment can influence both physical and mental health. Choice D is incorrect as research indicates that the environment can have a substantial impact on mental health outcomes.

4. What role do genetic predispositions play in the development of mental disorders?

• A. Genetic predispositions solely determine the development of mental disorders.
• B. Genetic predispositions play a role but are not solely responsible for the development of mental disorders.
• C. Genetic predispositions have no influence on mental disorders.
• D. Genetic predispositions guarantee the development of mental disorders.

Correct answer: B

Rationale: Genetic predispositions are indeed a factor in the development of mental disorders, but they are not the sole determining factor. While genetics can predispose individuals to certain conditions, environmental factors, lifestyle choices, and life experiences also play a significant role. Choice A is incorrect because mental disorders are influenced by a combination of genetic and environmental factors. Choice C is incorrect as genetic predispositions do have an impact on mental health. Choice D is incorrect as genetic predispositions do not guarantee the development of mental disorders, as other factors also contribute to their onset.

5. What does the genetic study of identical twins reared apart help to clarify?

• A. Differences in brain function
• B. Genetic influence on behavior
• C. Interaction between genetics and environment
• D. The role of environmental factors alone

Correct answer: C

Rationale: The correct answer is C: 'Interaction between genetics and environment.' The genetic study of identical twins reared apart helps in understanding how both genetics and environment play a role in shaping an individual's traits and behaviors. This type of study allows researchers to tease apart the effects of genetic inheritance from those of environmental influences. Choices A, B, and D are incorrect because the study of identical twins reared apart specifically focuses on the interplay between genetics and environment, rather than solely on differences in brain function, genetic influence on behavior, or the role of environmental factors alone.

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