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In The Blood

red blood cells, white blood cells, platelets, plasma

Circulatory System Unit

Synopsis

Your blood plays a team sport. Each different part works together to keep the whole field covered. Red blood cells handle oxygen, carbon dioxide, and nutrients. Your platelets make sure you stop bleeding once you start and white blood cells protect you from bad things that get into your body.

Science Vocabulary in this Article

  • red blood cells

  • white blood cells

  • platelets

  • plasma

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