Multiple choice

An adult human has _____ blood.

  1. 3 to 4 litres

  2. 5 to 8 litres

  3. 10 to 12 liters

  4. 12 to 14 liters
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An average adult human has 5 to 6 liters of blood, approximately 7% of body weight. This can range from 4.5 to 5.5 liters in females and 5 to 6 liters in males. 3-4 liters is too low, and 10+ liters is far above normal capacity.

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