Nursing Elites

1. What is 0.175 mg in mcg?

• A. 175 mcg
• B. 1.75 mcg
• C. 1750 mcg
• D. 17.5 mcg

Correct answer: C

Rationale: To convert milligrams to micrograms, you need to multiply by 1000 because there are 1000 micrograms in 1 milligram. Therefore, 0.175 mg x 1000 = 1750 mcg. The correct answer is 1750 mcg. Choices A, B, and D are incorrect because they do not account for the conversion factor of 1000 between milligrams and micrograms. It's crucial to understand these conversions in medical calculations to ensure accurate dosing and prevent medication errors.

2. Which part of the heart is responsible for generating the QRS complex on an ECG?

• A. Sinoatrial node (SA node)
• B. Atrioventricular node (AV node)
• C. Bundle of His
• D. Ventricular muscle cells

Correct answer: D

Rationale: The QRS complex on an ECG represents ventricular depolarization. This electrical activity is generated by the ventricular muscle cells. While the SA node generates the P wave, the AV node delays the impulse, and the Bundle of His and Purkinje fibers assist in rapidly conducting the impulse through the ventricles, it is the ventricular muscle cells that specifically create the QRS complex. Therefore, choice D, Ventricular muscle cells, is the correct answer. Choices A, B, and C are incorrect as they are primarily involved in initiating and coordinating the electrical impulses in the heart but do not directly generate the QRS complex on an ECG.

3. What can one reasonably conclude from the final comment of this passage? 'If he be Mr. Hyde,' he had thought, 'I should be Mr. Seek.'

• A. The speaker is considering changing names.
• B. The speaker is experiencing a determination to find Hyde.
• C. The speaker has mistakenly been looking for the wrong person.
• D. The speaker intends to continue to look for Hyde.

Correct answer: D

Rationale: The correct answer is D. The speaker's final comment indicates a determination to keep looking for Hyde, as he expresses his intention to become 'Mr. Seek' if the other person is indeed 'Mr. Hyde.' This shows that the speaker is persistent in his search for Hyde, as he believes that discovering Hyde's identity could potentially unravel the mystery and clarify his friend's strange behavior. Choices A, B, and C are incorrect because the final comment does not imply a name change, an identity crisis, or a mistaken search but rather a firm decision to continue seeking out Hyde.

4. Using the guide words degressive and delectation at the top of a dictionary page, which of the following words is most likely to appear on the following page of the dictionary?

• A. deleterious
• B. dehydrate
• C. delay
• D. deity

Correct answer: D

Rationale: The guide words degressive and delectation are given, suggesting that the word on the next page would start with 'dei.' In alphabetical order, 'deity' comes after 'delectation' and 'degressive,' making it the most likely word to appear on the following page of the dictionary. Choices A, B, and C do not follow the alphabetical progression based on the guide words provided.

5. Which part of the brain is responsible for controlling involuntary functions like breathing and heart rate?

• A. Cerebrum
• B. Medulla oblongata
• C. Cerebellum
• D. Thalamus

Correct answer: B

Rationale: The medulla oblongata is located at the base of the brainstem and is responsible for controlling vital involuntary functions such as breathing, heart rate, and blood pressure. The cerebrum, although the largest part of the brain, is primarily responsible for higher brain functions like thinking and voluntary muscle movements. The cerebellum is involved in coordination, balance, and muscle control. The thalamus acts as a relay station for sensory information but is not directly responsible for regulating involuntary functions like breathing and heart rate. Therefore, the correct answer is the medulla oblongata.

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