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  • 04-05-2017
  • Biology
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Why are substances able to diffuse through the capillaries?

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Hagrid
Hagrid Hagrid
  • 16-05-2017
Capillaries are made up of very thin and flat tissues that are spread across the body. Substances are able to diffuse through the capillaries because of the presence of blood. Particularly, the red blood cells that make-up blood within the body. These cells have the ability to carry oxygen, carbon dioxide, glucose, and water to pass through the capillaries. 
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