Approximately how much blood does the average adult contain?

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Multiple Choice

Approximately how much blood does the average adult contain?

Explanation:
An average adult typically contains about 5 liters of blood. This amount is roughly 7–8% of body weight, so for a person around 70 kg that’s about 4.9 liters. The normal range is approximately 4.7–5.5 liters to reflect individual differences in size and sex. The other numbers are not representative of a healthy adult’s blood volume. Knowing this helps in understanding how much blood is lost during hemorrhage and how transfusion needs relate to volume.

An average adult typically contains about 5 liters of blood. This amount is roughly 7–8% of body weight, so for a person around 70 kg that’s about 4.9 liters. The normal range is approximately 4.7–5.5 liters to reflect individual differences in size and sex. The other numbers are not representative of a healthy adult’s blood volume. Knowing this helps in understanding how much blood is lost during hemorrhage and how transfusion needs relate to volume.

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