Biology

9th

grade

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Human Body Systems

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22 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
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    Which system pumps blood through your body?
    circulatory
    digestive
    respiratory
    muscular
  • 2. Multiple Choice
    30 seconds
    1 pt
    Image
    What important substance is replenished as blood flows through the heart?
    iron
    nitrogen
    water
    oxygen
  • 3. Multiple Choice
    30 seconds
    1 pt
    Image
    As you exercise, your circulatory system works with which other system to take in oxygen?
    muscular
    digestive
    respiratory
    endocrine
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