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What is the function of blood
It transports oxygen and nutrients throughout the body
Helps fight infection by clotting
Carries waste such a carbon dioxide
How do blood vessels move through the body
The pumping action of the heart
Why is blood used
Blood is the only way substances can be transported throughout the body
What are the four components of blood
Plasma (55% mainly water)
Red blood cells (Erythrocytes )(45%)contains hemoglobin
White blood cells (Leukocytes ) (<1%) Immune system
Platelets (Thrombocytes)(<1) Blood clotting
