Nursing Elites

1. What is a major difference in the way baroreceptors and chemoreceptors work from the way the kidneys work?

• A. Baroreceptors and chemoreceptors send impulses from the arteries, while the kidneys control blood volume.
• B. Baroreceptors and chemoreceptors both work to help maintain blood volume, whereas the kidneys take care of salts, water, and waste removal.
• C. Baroreceptors and chemoreceptors must work together to control blood pressure, whereas the kidneys work with the adrenal cortex.
• D. Baroreceptors and chemoreceptors are both located near the adrenal cortex, whereas the kidneys are located near the heart.

Correct answer: A

Rationale: The correct answer is A. Baroreceptors and chemoreceptors send impulses from the arteries, while the kidneys control blood volume. Baroreceptors and chemoreceptors are responsible for monitoring blood pressure by sensing changes in pressure, oxygen levels, carbon dioxide levels, and pH within the arteries. They send out impulses to raise or lower blood pressure accordingly. On the other hand, the kidneys play a crucial role in regulating blood volume by absorbing salts and water and removing waste products. This key difference highlights that while baroreceptors and chemoreceptors are involved in monitoring and regulating blood pressure, the kidneys primarily focus on controlling blood volume. Choice B is incorrect because it inaccurately states that baroreceptors and chemoreceptors help maintain blood volume, which is not their primary function. Choice C is incorrect as it provides an inaccurate comparison between the roles of baroreceptors, chemoreceptors, and the kidneys. Choice D is incorrect as it wrongly associates the location of baroreceptors and chemoreceptors with the adrenal cortex, which is not accurate.

2. Which statement would not be inferred by the reader?

• A. Some forms of phototherapy have been around for decades.
• B. New applications of phototherapy continue to be developed.
• C. Phototherapy is most often used to treat skin problems.
• D. Ultraviolet rays can cause damage to eyes and skin.

Correct answer: D

Rationale: The correct answer is D. While the passage extensively discusses the benefits and applications of phototherapy, it does not mention that ultraviolet rays can cause damage to eyes and skin. This statement goes beyond the information provided in the passage and cannot be inferred. A. The passage mentions that phototherapy has been around for more than a century, supporting the statement that some forms of phototherapy have been around for decades. B. The passage discusses how new applications of phototherapy, like the phototherapy blanket, are being developed, making this statement valid as it aligns with the information provided. C. Phototherapy being most often used to treat skin problems is supported by the passage, which mentions its applications in treating acne, psoriasis, and eczema. Therefore, this statement can be inferred from the passage.

3. As used in the second paragraph, what does the term ubiquitous mean?

• A. Indigenous
• B. Often ignored
• C. Found everywhere
• D. Dangerous

Correct answer: C

Rationale: The correct answer is C: 'Found everywhere.' Ubiquitous in this context means widespread presence. In the provided extract, it is mentioned that MRSA bacteria have become ubiquitous not only in hospitals but also in various other settings, indicating they are found everywhere. Choice A, 'Indigenous,' is incorrect as it refers to something native or originating from a specific place, which is not the intended meaning in the context. Choice B, 'Often ignored,' is incorrect as ubiquitous means something that is widely present, not something that is ignored. Choice D, 'Dangerous,' is incorrect as ubiquitous does not directly imply danger, but rather the widespread presence of something.

4. The information presented is:

• A. Slanted in favor of newscasters
• B. Slanted against people with deep voices
• C. Balanced in its approach
• D. Not applicable

Correct answer: C

Rationale: The information is balanced in its approach. While the extract mentions that women tend to have shriller voices, making them less desirable public speakers, newscasters, or political candidates, it does not show bias in favor of newscasters or against people with deep voices. The main focus is on the impact of voice qualities such as harshness, rather than promoting or criticizing any specific group.

5. A vegetarian diet is said to lower all of the following EXCEPT ___________.

• A. The need for protein
• B. The percentage of body fat
• C. The risk of heart disease
• D. Cholesterol

Correct answer: A

Rationale: The passage suggests that a vegetarian diet can provide sufficient protein and lower body fat, heart disease risk, and cholesterol, but it does not suggest that it lowers the need for protein.

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