Blood Anatomy

By: Brady Moore

Plasma

The liquid part of blood that carries nutrients and hormones throughout the body. Makes up about 55% of blood tissue.
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Platelets

Cell fragments that assist in blood clotting. There are 300,000 Platelets per microliter of blood.
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Red Blood Cells

The most numerous type of blood cell. There are 5 million RBC per microliter of blood. Do not have a nucleus. The function is to transport nutrients and it only lives a short period of time (4 months). Carry Oxygen and Carbon Dioxide gases which bind to the hemoglobin protein on the RBC.
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White Blood Cells

There are 5,000 to 10,000 WBC per microliter of blood. Only blood cell that contains a nucleus and thus DNA. Belong to the circulatory system, but they are also part of the immune system. Main function is to fight disease and foreign invaders - anything from a virus to a splinter to a donated organ.
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