North Carolina Basic Law Enforcement Training (BLET) State Practice Exam

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What is the normal respiratory rate for an adult?

8-12 per minute
10-18 per minute
12-20 per minute
15-25 per minute

The correct answer is: 12-20 per minute

The normal respiratory rate for an adult typically falls within the range of 12 to 20 breaths per minute. This range is widely accepted in the medical community and reflects the average rate at which healthy adults breathe while at rest. Factors such as physical condition, age, and activity level can influence this rate, but generally, a respiratory rate outside of this range may indicate potential health concerns. The chosen range signifies an optimal respiratory function as it allows for sufficient oxygen intake and carbon dioxide expulsion, which are critical for maintaining homeostasis in the body's systems. Laboratory and clinical studies have supported this standard, making it a reliable reference point for assessing respiratory health in adults.