Nursing Elites

1. Which vitamin plays a vital role in muscle function and helps prevent muscle weakness and fatigue?

• A. Vitamin A
• B. Vitamin B12
• C. Vitamin D
• D. Vitamin E

Correct answer: C

Rationale: Vitamin D is the correct answer as it plays a crucial role in muscle function by helping prevent muscle weakness and fatigue. It is essential for maintaining muscle strength and function, as well as supporting overall bone health. Vitamin D deficiency can lead to muscle weakness and fatigue, emphasizing its significance for muscle health. Vitamin A does not directly impact muscle function in the same way as Vitamin D. Although Vitamin B12 is important for neurological function and red blood cell production, it is not primarily known for its role in muscle function. Vitamin E is more commonly associated with its antioxidant properties and its role in protecting cells from damage, but it is not specifically linked to muscle function and preventing muscle weakness and fatigue.

2. Which of the following describes a reflex arc?

• A. The storage and recall of memory
• B. The maintenance of visual and auditory acuity
• C. The autoregulation of heart rate and blood pressure
• D. A stimulus and response controlled by the spinal cord

Correct answer: D

Rationale: Choice D correctly describes a reflex arc. A reflex arc is a neural pathway that controls a reflex action. It involves a specific sequence of events that occur in response to a stimulus, which is rapidly and involuntarily processed by the spinal cord. The spinal cord coordinates the quick processing of sensory input and the generation of a motor response without involving the brain, allowing for rapid protective responses. Choices A, B, and C are incorrect because they do not accurately describe a reflex arc. A reflex arc is specifically related to the rapid and involuntary response to a stimulus through neural pathways involving the spinal cord, not memory storage, visual and auditory acuity maintenance, or heart rate and blood pressure autoregulation.

3. Which word has the same root as 'unscathed'?

• A. category
• B. scar
• C. scratch
• D. category

Correct answer: C

Rationale: The word 'unscathed' means without harm or damage. The word 'scratch' shares the same root related to physical marks or damage, making it the correct choice. 'Category' and 'scar' do not have the same root as 'unscathed' and are not related to the concept of being unharmed, making them incorrect choices.

4. What is the breakdown product of creatine phosphate, an energy source used for short bursts of muscle activity?

• A. Glucose
• B. Lactic acid
• C. Carbon dioxide
• D. Creatine

Correct answer: B

Rationale: Creatine phosphate is utilized as an immediate energy source for short bursts of muscle activity. When it breaks down, it yields lactic acid as a byproduct. Lactic acid accumulation during intense exercise can lead to muscle fatigue and soreness. Therefore, the correct answer is lactic acid. The other choices are incorrect: Glucose is a different energy source derived from carbohydrates; Carbon dioxide is a waste product of cellular respiration, not specifically from creatine phosphate breakdown; Creatine is the precursor compound to creatine phosphate and is not the breakdown product.

5. Which detail from the passage best supports the conclusion that the little girl is no older than three years old?

• A. For lunch, she likes ham and cheese (torn into bites), yogurt, raisins, applesauce, peanut butter sandwiches in the fridge drawer, or any combo of these.
• B. It’s fine if you want to go somewhere, just leave us a note of where you are.
• C. As for nap, try after lunch. She may not sleep, but try anyway.
• D. Turn on music in her room, leave her in her crib with a dry diaper and bottle to try to sleep.

Correct answer: D

Rationale: The detail from choice D, 'Turn on music in her room, leave her in her crib with a dry diaper and bottle to try to sleep,' best supports the conclusion that the little girl is no older than three years old. This detail suggests that the child is still using a crib for sleeping, a common practice for infants and toddlers. Additionally, the mention of a bottle indicates that the child is likely young, as older children typically do not use bottles for sleep. Choices A, B, and C do not provide specific details related to the child's age like the mention of a crib and a bottle does in choice D.

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