Blood

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  • Created by: Abbie
  • Created on: 09-05-12 18:55

Blood

Capilliaries

  • Deliver food and oxygen to cells
  • Get rid of waste products like carbon dioxide
  • Use diffusion to do this
  • Walls only one cell thick - easy for substances to pass in and out
  • Too small to see without a microscope

(http://gcserevision101.files.wordpress.com/2009/02/capillary.jpg?w=151&h=151)

Blood is made up of 4 main parts:

  • white blood cells
  • red blood cells
  • plasma
  • platelets (small fragments of cells that help blood to clot at a wound)

Red

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