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Circulation System
There are five parts to your circulation system. Can you guess what they are?
This picture is a simple version of the circulation system. Can you see the parts of the circulation system yet?
This is the heart. What job does it do?
The heart pumps the blood around the body.
The blood is made of four different parts. The liquid part is called plasma
Red blood cells carry oxygen.
White blood cells attack microbes.
Platelets block cuts.
Your blood has to travel around your body. How does it get from one place to   another ?
There are three different kinds of blood vessel in your body.
Arteries <ul><li>Thick walls </li></ul><ul><li>Stretches easily </li></ul><ul><li>Very strong </li></ul>
Veins <ul><li>Thin walls </li></ul><ul><li>Contain valves to make the blood flow in one direction </li></ul>
Capillary <ul><li>Very narrow </li></ul><ul><li>One cell thick </li></ul><ul><li>Next to every cell in your body </li></ul>
Facts about the circulation system <ul><li>You have four litres of blood in your body </li></ul><ul><li>Your heart beats 1...
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Circulation

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Circulation

  1. 1. Circulation System
  2. 2. There are five parts to your circulation system. Can you guess what they are?
  3. 3. This picture is a simple version of the circulation system. Can you see the parts of the circulation system yet?
  4. 4. This is the heart. What job does it do?
  5. 5. The heart pumps the blood around the body.
  6. 6. The blood is made of four different parts. The liquid part is called plasma
  7. 7. Red blood cells carry oxygen.
  8. 8. White blood cells attack microbes.
  9. 9. Platelets block cuts.
  10. 10. Your blood has to travel around your body. How does it get from one place to another ?
  11. 11. There are three different kinds of blood vessel in your body.
  12. 12. Arteries <ul><li>Thick walls </li></ul><ul><li>Stretches easily </li></ul><ul><li>Very strong </li></ul>
  13. 13. Veins <ul><li>Thin walls </li></ul><ul><li>Contain valves to make the blood flow in one direction </li></ul>
  14. 14. Capillary <ul><li>Very narrow </li></ul><ul><li>One cell thick </li></ul><ul><li>Next to every cell in your body </li></ul>
  15. 15. Facts about the circulation system <ul><li>You have four litres of blood in your body </li></ul><ul><li>Your heart beats 100,000 times a day </li></ul><ul><li>Your body contains 100,000km of blood vessels </li></ul>

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