Nursing Elites

1. The muscular diaphragm plays a vital role in respiration. When it contracts, it:

• A. Increases lung volume for inhalation
• B. Decreases lung volume for exhalation
• C. Filters dust and particles from inhaled air
• D. Produces mucus to lubricate the airways

Correct answer: A

Rationale: The muscular diaphragm plays a crucial role in respiration by contracting and flattening during inhalation. This action increases the volume of the thoracic cavity, which leads to a decrease in pressure within the lungs, allowing air to rush in and fill the expanded space. Choice B is incorrect because the diaphragm contracting increases the lung volume for inhalation, not decreases it for exhalation. Choice C is incorrect as the role of filtering dust and particles is primarily performed by the respiratory system's other structures like the nasal passages and the mucous membranes. Choice D is incorrect as mucus production is mainly carried out by specialized cells in the respiratory system and not by the diaphragm.

2. Which word choices will correctly complete the sentence? Increasing the price of bus fares has had a greater effect on ridership than expected.

• A. affect; then
• B. affect; than
• C. effect; then
• D. effect; than

Correct answer: D

Rationale: In this sentence, 'effect' is the correct word as it refers to the result of increasing bus fares. Additionally, 'than' is used for making comparisons, which is appropriate in this context. 'Affect' is incorrect as it is a verb, not a noun, and 'then' is incorrect as it should be 'than' to show the comparison between the actual outcome and the expected outcome.

3. What is the simplest way to write the following expression? 5x - 2y + 4x + y

• A. 9x - y
• B. 9x - 3y
• C. 9x + 3y
• D. x; y

Correct answer: A

Rationale: To simplify the given expression 5x - 2y + 4x + y, we combine like terms. Grouping the x terms together and the y terms together, we have 5x + 4x - 2y + y. Combining like terms results in 9x - y. Therefore, the simplest form of the expression is 9x - y, which corresponds to option A. Option B is incorrect because it incorrectly subtracts 3y instead of just y. Option C is incorrect because it adds 3y instead of subtracting y. Option D is incorrect as it separates x and y with a semicolon instead of an operation, providing no simplified expression.

4. What is the function of the pericardium, the sac surrounding the heart?

• A. To generate electrical impulses for heart contraction
• B. To transport blood throughout the body
• C. To provide lubrication for heart movement
• D. To protect the heart and anchor it in place

Correct answer: C

Rationale: The pericardium is a double-walled sac that surrounds the heart and contains a small amount of fluid to provide lubrication for the movement of the heart within the chest cavity. It helps reduce friction as the heart beats and moves. Choice A is incorrect because the generation of electrical impulses for heart contraction is primarily the function of the heart's specialized conduction system. Choice B is incorrect as the pericardium is not involved in the transportation of blood throughout the body. Choice D is also incorrect as while the pericardium does protect the heart, its primary function is to provide lubrication and reduce friction.

5. After an unexpected rearrangement of their schedules, Thomas and his sister realize that they will have to squeeze in the film after 10 p.m. Given this new information, which cinema is the best option?

• A. Twin Theatres
• B. Reveler Cinema
• C. Big Screen 14
• D. Best Seat in The House

Correct answer: B

Rationale: Since Thomas and his sister have to squeeze in the film after 10 p.m., they need to watch the film later in the evening. Among the options, Reveler Cinema offers showtimes after 10 p.m. with a showing at 7:15 p.m., making it the best choice. Twin Theatres, Big Screen 14, and Best Seat in The House do not have showtimes after 10 p.m., making Reveler Cinema the most suitable option for the siblings to catch a film at that time.

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