Class II

Leukocytes are found in lots of places, including an organ in your belly that filters blood and helps fight infections known as the:
  1. Heart
  2. Spleen
  3. Kidneys
  4. Brain
To be “immune” means what?
  1. That you are infected
  2. That you are bald
  3. That you are more likely to get sick
  4. That you are protected
Getting these when you’re young helps your immune system fight off diseases:
  1. Stickers
  2. Bandages
  3. Shots (immunizations)
  4. Cough drops
Which of the following will not help your immune system?
  1. Playing sports video games
  2. Exercising
  3. Eating healthy food
  4. Regularly washing your hands
The immune system is made up of:
  1. Tissues
  2. Organs
  3. Cells
  4. All of the above
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