North Carolina EMT State Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 665

Which of the following describes normal blood volume in an average adult?

4 liters

5 liters

Normal blood volume in an average adult typically ranges between approximately 4.5 to 6 liters, depending on factors such as body size and composition. The figure widely accepted is around 5 liters for adults, which accounts for the variability among individuals.

The correct choice reflects this understanding of normal blood volume since 6 liters falls within the higher end of the normal range. It's essential to recognize that variations exist due to physiological differences, but 6 liters could still be accurate for certain individuals, especially those with larger body mass. Blood volume is crucial for maintaining adequate circulation, delivering oxygen and nutrients to tissues, and removing waste products, which highlights the significance of understanding its normal range in the context of emergency medical services.

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6 liters

7 liters

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