Nursing Elites

1. Which protein complex in the sarcomere is responsible for the thick filament?

• A. Actin
• B. Myosin
• C. Tropomyosin
• D. Troponin

Correct answer: B

Rationale: Myosin is the protein complex responsible for the thick filament in the sarcomere. It interacts with actin, another protein in the sarcomere, to generate the sliding movement that results in muscle contraction. Actin is a thin filament protein that interacts with myosin to create the sliding filament mechanism. Tropomyosin and troponin are regulatory proteins that regulate muscle contraction by controlling the interaction between actin and myosin, rather than directly being responsible for the thick filament.

2. Fill in the blank with the correct subordinating conjunction: '... the class was difficult, Allison passed with flying colors.'

• A. If
• B. Since
• C. Because
• D. Although

Correct answer: D

Rationale: The correct conjunction is 'Although.' In this sentence, there is a contrast being made between the difficulty of the class and Allison's success, indicating that despite the class being difficult, she excelled. 'If' implies a condition, 'Since' indicates a reason, and 'Because' shows causation, which do not fit the context of the sentence where a contrast is being expressed.

3. What source would be most useful in determining the reliability of Punxsutawney Phil's predictions over a number of years?

• A. A memoir from a former president of the Groundhog Club
• B. A record of weather patterns over the past decade
• C. An article on groundhog behavior in the northeast U.S
• D. A historical account of Groundhog Day traditions

Correct answer: B

Rationale: A record of weather patterns over the past decade would be the most useful source in determining the reliability of Punxsutawney Phil's predictions. By comparing Phil's forecasts with the actual weather outcomes, one can analyze the accuracy of his predictions. Choices A, C, and D do not directly provide the necessary data on weather patterns to evaluate Phil's reliability.

4. Which of the following areas has the least amount of sweat glands?

• A. Back
• B. Palms
• C. Axilla
• D. Forehead

Correct answer: B

Rationale: The correct answer is B - Palms. The palms have the least amount of sweat glands compared to the other options listed. The back, axilla (armpits), and forehead are all areas with a higher concentration of sweat glands in the body. The palms have fewer sweat glands to minimize water loss and maintain a better grip for activities requiring precise and controlled movement. The back, axilla, and forehead have more sweat glands to assist in thermoregulation and cooling of the body, while the palms have fewer sweat glands for functional reasons related to grip and dexterity.

5. Edema, characterized by swelling due to fluid buildup, can be a sign of:

• A. Heart failure
• B. Liver disease
• C. Lymphatic system dysfunction
• D. All of the above

Correct answer: D

Rationale: Edema is the swelling caused by fluid retention in the body tissues. It can indicate various underlying conditions. Heart failure can lead to fluid buildup due to the heart's ineffective pumping. Liver disease can cause edema by reducing protein production, leading to fluid leakage into tissues. Dysfunction of the lymphatic system can impair fluid drainage, contributing to edema. Therefore, all of the above conditions can manifest with edema, making the correct answer 'All of the above.' Choices A, B, and C are all valid causes of edema, making them incorrect when considered individually. Selecting 'All of the above' encompasses all the possible causes of edema.

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