Question #33ca0
1 Answer
Dec 7, 2017
As stated in your question, MOST of the plasma separates. There is still enough liquid around the RBCs to be fluid.
Explanation:
Red Blood Cells themselves might appear fluid in any case. They are flexible cells, not rigid solids. But centrifugation only separates materials by relative mass. To exert the pressure necessary to squeeze ALL of the plasma out of the RBC layer would likely rupture the blood cells themselves. That is not the intent of the centrifugal separation.
