Nursing Elites

1. Which of the following are found both in open and closed circulatory systems?

• A. Arteries
• B. Red blood cells
• C. Capillaries
• D. Immune cells

Correct answer: C

Rationale: The correct answer is C, Capillaries. Capillaries are found in both open and closed circulatory systems. Capillaries are small blood vessels that connect arteries and veins, allowing for the exchange of nutrients and wastes between the blood and tissues. They are essential components of circulatory systems regardless of whether they are open or closed. Arteries (Choice A) are not found in open circulatory systems, as these systems lack distinct arteries and veins. Red blood cells (Choice B) are present in the blood but are not exclusive to either open or closed circulatory systems. Immune cells (Choice D) are not specific components of circulatory systems, as they are part of the immune system.

2. What is the primary function of the alveoli in the lungs?

• A. Removing carbon dioxide from the blood
• B. Exchanging oxygen and carbon dioxide
• C. Transporting oxygen to the bloodstream
• D. Filtering blood

Correct answer: B

Rationale: The primary function of the alveoli in the lungs is to exchange oxygen and carbon dioxide. The alveoli are tiny air sacs in the lungs responsible for this gas exchange during breathing. Oxygen diffuses from the inhaled air into the blood in the capillaries surrounding the alveoli, while carbon dioxide diffuses from the blood into the alveoli to be exhaled out of the body. Choice A is incorrect because the alveoli primarily facilitate the exchange of gases, not just the removal of carbon dioxide. Choice C is incorrect as the alveoli do not transport oxygen to the bloodstream but rather facilitate the exchange of gases. Choice D is incorrect as the alveoli are not involved in filtering blood but in gas exchange to ensure proper oxygenation and removal of carbon dioxide in the respiratory process.

3. Select the word that makes the following sentence grammatically correct. Having ___________ one pill at bedtime, the patient was able to sleep for eight hours.

• A. took
• B. take
• C. taking
• D. taken

Correct answer: C

Rationale: The correct word to use in this sentence is 'taking' to show the continuous aspect of the action. The sentence should read: 'Having taking one pill at bedtime, the patient was able to sleep for eight hours.' 'Taking' is the present participle form of the verb 'take,' which is appropriate in this context to indicate the ongoing action of taking a pill at bedtime. Choice A, 'took,' is incorrect as it is the simple past tense, not suitable for this sentence's structure. Choice B, 'take,' is the base form of the verb, which does not fit the sentence's requirement for a participle. Choice D, 'taken,' is the past participle form, which is also unsuitable for showing the ongoing action required in this context.

4. What is the meaning of the word 'booking' as used in the first paragraph?

• A. Scheduling
• B. Contracting
• C. Traveling
• D. Charging

Correct answer: A

Rationale: In this context, 'booking' refers to scheduling appointments for bone density tests. The correct choice is 'A: Scheduling' because in the given text, women are booking bone density tests to ensure their bone health. 'Contracting' (Choice B) is incorrect as it does not fit the context of making appointments. 'Traveling' (Choice C) and 'Charging' (Choice D) are also irrelevant to the context of scheduling appointments for medical tests.

5. Which of the following describes a vector quantity?

• A. 5 miles per hour due southwest
• B. 5 miles per hour
• C. 5 miles
• D. None of the above

Correct answer: A

Rationale: A vector quantity is characterized by both magnitude and direction. In the provided options, choice A, '5 miles per hour due southwest,' fits this definition as it includes both the magnitude (5 miles per hour) and the direction (southwest), making it a vector quantity. Choices B and C only provide the magnitude without indicating any direction, hence they do not represent vector quantities.

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