Nursing Elites

1. What is the function of the sinuses?

• A. To trap many airborne pathogens
• B. To direct air down the trachea rather than the esophagus
• C. To warm, humidify, and filter air
• D. To sweep away pathogens and direct them toward the top of the trachea

Correct answer: C

Rationale: The correct function of the sinuses is to warm, humidify, and filter the air we breathe. Sinuses play a crucial role in preparing the air for the respiratory system by adding moisture, warmth, and filtering out particles. Choice A is incorrect because while sinuses can help filter some particles, their primary function is not to trap pathogens. Choice B is incorrect as the sinuses do not control the direction of air down the trachea; this is regulated by the epiglottis and vocal cords. Choice D is incorrect as sinuses do not sweep pathogens away or direct them towards the trachea; instead, they condition the air for respiration.

2. What type of cells compose the epidermis?

• A. Osteoclasts
• B. Connective
• C. Dendritic
• D. Epithelial

Correct answer: D

Rationale: The correct answer is D: Epithelial. The epidermis is composed of epithelial cells, specifically called keratinocytes, which are responsible for producing keratin, a protein that provides the skin with strength and flexibility. Epithelial cells form the protective outer layer of the skin and play a crucial role in skin repair and regeneration. Choice A - Osteoclasts are cells involved in bone remodeling, not found in the epidermis. Choice B - Connective tissue cells are not the primary cells found in the epidermis. They are more commonly found in the dermis, providing structural support and elasticity to the skin. Choice C - Dendritic cells are part of the immune system and are present in the skin to help recognize pathogens and activate the immune response. However, they are not the main cell type that composes the epidermis.

3. Which of the following perspectives can be inferred from the passage?

• A. Cicadas and public interest in cicadas are cyclical.
• B. Cicadas and public interest in cicadas are global.
• C. Cicadas and public interest in cicadas are inspirational.
• D. Cicadas and public interest in cicadas are inapplicable.

Correct answer: A

Rationale: The correct answer is A. The passage provided talks about the cyclical nature of going to the theatre and how it transports individuals into different stories. There is no mention of global aspects, inspirational qualities, or inapplicability related to cicadas and public interest in cicadas. Therefore, choices B, C, and D are incorrect as they are not supported by the passage.

4. Select the correct verbs to complete the following sentences: Where _________ everyone? What ___________ they doing?

• A. is, is
• B. is, are
• C. are, is
• D. are, are

Correct answer: B

Rationale: The correct answer is B: 'is, are'. 'Where is everyone?' requires the singular verb 'is' to agree with 'everyone'. 'What are they doing?' requires the plural verb 'are' to match the plural subject 'they'. Option A 'is, is', does not provide correct subject-verb agreement in the second sentence. Option C 'are, is' and Option D 'are, are' do not maintain consistent subject-verb agreement within the sentences.

5. A satellite orbits the Earth at a constant speed. Which force is responsible for its circular motion?

• A. Gravitational force from the Earth
• B. Thrust from the satellite's engine
• C. Friction between the satellite and the atmosphere
• D. Normal force from the Earth's surface

Correct answer: A

Rationale: The gravitational force from the Earth is responsible for keeping the satellite in its circular orbit. This force provides the necessary centripetal force required to maintain the circular motion of the satellite. The gravitational force acts as the centripetal force, pulling the satellite towards the center of the Earth, thereby keeping it in its circular path. Choices B, C, and D do not provide the necessary force to keep the satellite in its circular path. Thrust from the satellite's engine would change the speed or direction of the satellite, not maintain its circular path. Friction between the satellite and the atmosphere would act as a resistive force, slowing down the satellite rather than maintaining its orbit. The normal force from the Earth's surface is perpendicular to the surface and does not contribute to the circular motion of the satellite. Therefore, the correct answer is A, as the gravitational force acts as the centripetal force to keep the satellite in its circular path around the Earth.

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