Arteries, Veins and Capillaries

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Across
  1. 3. allow exchange of materials
  2. 8. lining around the channel
  3. 9. found in plasma, not tissue fluid
Down
  1. 1. artery supplies heart with blood
  2. 2. pushes plasma into tissue fluid
  3. 4. excess tissue fluid
  4. 5. smooth muscle relaxes
  5. 6. channel in the vessels
  6. 7. prevent backflow of blood