Multiple choice

About what percentage of the average human's body weight is blood?

  1. 1%-3%

  2. 4%-6%

  3. 7%-10%

  4. 11%-13%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blood accounts for approximately 7% to 8% of an adult human's total body weight. For an average adult weighing 150 to 180 pounds, this equates to about 1.2 to 1.5 gallons of blood.

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