Class II

These are tubes that carry blood back to the heart:
  1. Arteries
  2. Veins
  3. Pipes
  4. Tubas
You can keep your heart strong by:
  1. Eating heart-shaped candy
  2. Doing activities, like playing outside, riding your bike, and swimming
  3. Smoking
  4. Sleeping 18 hours a day
The beating sound your heart makes comes from:
  1. Blood going in the wrong direction
  2. Valves closing
  3. The heart skipping beats
  4. Your ears playing tricks on you
What organ removes waste from blood?
  1. Heart
  2. Lungs
  3. Eyes
  4. Kidneys
What parts act like doors that control blood flow in the heart?
  1. Valves
  2. Heart dams
  3. ) Kidneys
  4. Chambers
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