Multiple choice

The percentage of plasma in the blood of human beings is about

  1. 45%

  2. 50%

  3. 55%

  4. 60%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blood is composed of plasma and formed elements (cells). Plasma makes up approximately 55 percent of the total blood volume, while the remaining 45 percent consists of red blood cells, white blood cells, and platelets.

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