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Test Your Knowledge About Blood

  1. The main function of these cells is to defend
    the body against infection.


  2. These cells play an essential role in the blood
    clotting process.


  3. These blood cells carry oxygen to tissues through
    out the body.


  4. How many blood cells in the human body
    die each second.


  5. What is the name of the process that generates
    new red blood cells.


  6. What is the life span of red blood cells.

Score =

Correct answers:

If you have scored over 70%, congratulations you may go on to the next section.  If your score was less than 70%, we're sorry you must go back and study harder.

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