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7th grade The heart, vessels and blood flow worksheet

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The heart, vessels and blood flow

Grade 7 Science Worksheet - Challenge Me

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Circle the best answer, or write your answer on the line.

  1. A red blood cell leaves the lungs in a pulmonary vein. Which path does it take next, Ari?

    • Left ventricle, lungs, body
    • Left atrium, left ventricle, body
    • Straight to the body, skipping the heart
    • Right atrium, right ventricle, lungs

  2. Esme lists a path: right ventricle → lungs → left atrium → left ventricle. Which step comes just before the right ventricle?

    • Left ventricle
    • Lungs
    • Right atrium
    • Left atrium

  3. The pulmonary artery carries oxygen-poor blood from the heart to the lungs. Why is it still called an artery, Jun?

    • It is a capillary
    • It carries oxygen-rich blood
    • It carries blood back to the heart
    • It carries blood away from the heart

  4. The pulmonary veins carry oxygen-rich blood from the lungs to the heart. Why are they veins, Kira?

    • They carry blood back to the heart
    • They carry blood away from the heart
    • Veins carry oxygen-poor blood by definition
    • They have walls one cell thick

  5. Luz must label the vessel taking blood from the right ventricle to the lungs. Which label is right?

    • Aorta
    • Capillary
    • Pulmonary artery
    • Pulmonary vein, as the blood is oxygen-poor

  6. Milo says arteries always carry oxygen-rich blood. Agree or disagree?

    • Agree: veins carry the oxygen-poor blood
    • Disagree: the pulmonary artery is an exception
    • Agree: that is what artery means
    • Disagree: arteries carry no blood

  7. Noah says oxygen passes into body cells through the walls of big arteries. Agree or disagree?

    • Disagree: it passes through capillaries
    • Disagree: oxygen stays in the blood
    • Agree: veins and arteries both let it through
    • Agree: arteries carry the oxygen, so it leaves there

  8. Pia says veins carry blood away from the heart. Agree or disagree?

    • Disagree: veins bring it back
    • Disagree: veins don't carry blood
    • Agree: veins are the outgoing vessels
    • Agree: both kinds carry it away

  9. A resting adult's heart beats about 75 times a minute and pumps about 70 mL each beat. About how many mL does it pump in a minute, Ren?

  10. During a bike ride, a heart beats 120 times a minute and pumps 90 mL each beat. How many mL does it pump in a minute, Zee?

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7th grade The heart, vessels and blood flow worksheet – printable
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About this worksheet

The heart, vessels and blood flow. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can name the heart, arteries, veins and capillaries and say what each does.
  • I can trace blood: body → right atrium → right ventricle → lungs → left atrium → left ventricle → body.
  • I can explain where oxygen enters the blood and where it passes to cells, and why the heart beats faster in exercise.

Standard: MS-LS1-3

Words to know

atrium (atria): An upper heart chamber that receives blood

ventricle: A lower heart chamber that pumps blood out

artery: A vessel carrying blood away from the heart

vein: A vessel carrying blood back to the heart

capillary: A tiny vessel, one cell thick, where things pass to and from cells

pulmonary: To do with the lungs

Common mistakes

Your child swapped arteries and veins. Arteries carry blood away from the heart; veins carry it back. A for away is a handy reminder.

Your child named a vessel by its oxygen. Vessels are named by direction: the pulmonary artery carries oxygen-poor blood away from the heart to the lungs.

Your child mixed up the heart's two sides. The right side pumps blood to the lungs; the left side pumps it to the body.

Questions parents ask

What is the most common mistake with the heart, vessels and blood flow?

Your child swapped arteries and veins. Arteries carry blood away from the heart; veins carry it back. A for away is a handy reminder.

Are these 7th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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