Quiz  /  Circulatory system Class 4 MCQ Questions With Answers

  • 1. 
    What does blood do?

  • Carries Water to cells
  • Carries Oxygen to cells
  • Carries Food to cells
  • All of the above

  • 2. 
    Veins carry oxygen poor blood back to the heart.

  • False
  • True

  • 3. 
    What function does the heart do?

  • Protects organs and produces red blood cells.
  • Generates heat.
  • Breaks down food into nutrients.
  • The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows.

  • 4. 
    What does the circulatory system do?

  • pumps blood through the whole body
  • pumps blood to the brain
  • pumps blood to the lungs
  • pumps blood

  • 5. 
    What do Red-Blood cells do?

  • Carry oxygen from the lungs to the body cells and  transport carbon dioxide from the cells back to the lungs
  • keeps blood flowing in one direction to the heart and prevent blood from flowing backwards
  • Collects  blood from the capillaries and drain it into the veins
  • Bring nutriients to the cells and carries away waste materials.

  • 6. 
    How many types of blood vessels are in our body?

  • 1
  • 2
  • 3
  • 4

  • 7. 
    The heart has ___ chambers.

  • 1
  • 2
  • 3
  • 4

  • 8. 
    Carbon dioxide is considered a _________________

  • food
  • waste
  • energy
  • fun party favor

  • 9. 
    Arteries carry oxygen rich blood away from the heart.

  • True
  • False

  • 10. 
    ______________ are the second largest blood vessel.

  • Arteries
  • Veins
  • Capillaries

  • 11. 
    What is the heart ?

  • meaty organ
  • a small metal spike with a broadened flat head,
  • organ of soft nervous tissue
  • muscular organ

  • 12. 
    What is the Circulatory System also known as?

  • The heart
  • Cardiovascular System
  • Nervous System
  • Aorta

  • 13. 
    Arteries, veins, and capillaries are three types of __________

  • heart valves
  • blood vessels
  • cells
  • veins

  • 14. 
    What does Deoxygenated mean?

  • Oxygen-rich
  • Blood flow
  • Oxygen-poor
  • Water Flow

  • 15. 
    Which is the correct definition of the Circulatory system?

  • The system fights disease so the body stays healthy.
  • The system that circulates blood and oxygen through the body, consisting of the heart,blood vessels,and blood.
  • Breaks down food into smaller pieces and absorbs those nutrients into the body.
  • Provides shape and structure for the body.

  • 16. 
    ______________ are the smallest blood vessels.

  • Arteries
  • Veins
  • Capillaries
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