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Fourth Grade (Grade 4) Circulatory and Immune Systems Questions

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Grade 4 Circulatory and Immune Systems
Which statement describes veins?
  1. take oxygen that your body needs from the air and put it in your bloodstream. They also take carbon dioxide that is your blood and send it out of your body.
  2. are blood vessels that send blood back towards your heart. Most of the blood they carry dosen't have much oxygen left in it,
  3. the small intestines
  4. are blood vessels that send blood away from your lungs to all different parts of your body.
Grade 4 Circulatory and Immune Systems
Grade 4 Circulatory and Immune Systems
What are the three part of the circulatory system?
  1. lungs, heart, and blood vessels
  2. heart, brain, and spinal cord
  3. heart, blood vessels, and the lungs
  4. heart, blood, and blood vessels
Grade 4 Circulatory and Immune Systems
What is the job of the heart?
  1. to regulate our breathing
  2. to pump blood through the whole body
  3. to carry nutrients to our organs
  4. to take up space by our lungs
Grade 4 Circulatory and Immune Systems
Grade 4 Circulatory and Immune Systems
Grade 4 Circulatory and Immune Systems
When you are sick, what helps us get better by attacking the virus or bacteria?
  1. red blood cells
  2. white blood cells
  3. platelets
  4. plasma
Grade 4 Circulatory and Immune Systems
These blood cells protect the body from illness.
  1. red blood cells
  2. white blood cells
  3. platelets
  4. capillaries
Grade 4 Circulatory and Immune Systems
These blood cells carry oxygen to all the body's cells.
  1. white blood cells
  2. red blood cells
  3. platelets
  4. plasma
Grade 4 Circulatory and Immune Systems
Why does your heart rate change?
  1. It depends on the time of day.
  2. It depends on what activity you are doing.
  3. It depends on your age.
  4. It depends on what you eat.
Grade 4 Circulatory and Immune Systems
When we exercise, what is needed to carry more oxygen?
  1. red blood cells
  2. white blood cells
  3. platelets
  4. plasma
Grade 4 Circulatory and Immune Systems
Grade 4 Circulatory and Immune Systems
What are platelets?
  1. the liquid part that blood travels through
  2. the colorless, sticky parts of the blood that stop bleeding
  3. a blood vessel that carries blood away from the heart
  4. a blood vessel that carries blood to the heart
Grade 4 Circulatory and Immune Systems
Which of these describes and artery?
  1. a blood vessel that carries blood away from the heart
  2. a blood vessel that carries blood back to the heart
  3. the smallest blood vessels which have very thin walls for oxygen to pass through
  4. the liquid part the blood travels through
Grade 4 Circulatory and Immune Systems
Which of these describes capillaries?
  1. a blood vessel that carries blood away from the heart
  2. a blood vessel that carries blood back to the heart
  3. the smallest blood vessels which have very thin walls for oxygen to pass through
  4. the liquid part the blood travels through
Grade 4 Circulatory and Immune Systems
Grade 4 Circulatory and Immune Systems
Your heart                                     .
  1. is a muscle
  2. carries carbon dioxide to your cells
  3. holds your emotions
  4. all the above
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