The heart, vessels and blood flow

Grade 7 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   Ari studies a circulation drawing. Part X carries blood away from the heart. What is part X called?

   • An artery
   • A vein
   • A valve
   • A capillary
2. 2.

   In Bo's drawing, part Y carries blood back to the heart. What is part Y called?

   • A vein
   • A lung
   • A capillary
   • An artery
3. 3.

   In Esme's drawing, part Z is a tiny vessel, one cell thick, where oxygen passes to body cells. What is it called?

   • An artery, as it carries oxygen
   • A vein
   • A capillary
   • The heart
4. 4.

   Which way do arteries carry blood, Jun?

   • Away from the heart
   • Nowhere: they store it
   • To the lungs and nowhere else
   • Back to the heart
5. 5.

   Which way do veins carry blood, Kira?

   • To the brain and nowhere else
   • Into the stomach
   • Away from the heart
   • Back to the heart
6. 6.

   Blood leaves the heart for the arms and legs. Which vessels does it travel in first, Luz?

   • Capillaries, then arteries
   • Arteries
   • Veins
   • The windpipe
7. 7.

   Milo learns the heart has two atria and two ventricles. What is the heart's main job?

   • To pump blood
   • To make oxygen for the blood
   • To store food
   • To clean the air

8. Read this first

   Numbered path, not to scale

   1 body → 2 right atrium → 3 right ventricle → 4 lungs → 5 left atrium → 6 left ventricle → 7 body.

9. 8.

   Where does the left side of the heart pump blood, Pia?

   • To the body
   • To the brain alone
   • To the lungs
   • Back to the right side
10. 9.

    Where does blood pick up oxygen, Tala?

    • In the left atrium
    • In the lungs
    • In the right ventricle
    • In the body's muscles
11. 10.

    Blood returning from the body reaches the right atrium. Where does it go next, Zee?

    • Straight back out to the body
    • To the stomach
    • To the left ventricle
    • To the right ventricle