Blood pressure is determined by two factors: 1) The amount of blood pumped by the left ventricle of the heart into the arteries, and 2) the resistance to the flow of blood caused by the walls of the arterioles (smaller arteries).
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6. Following centrifugation, you can see that it is nearly impossible to distinguish the plasma membrane pellet from the supernatant. So, we need to feel our way as we decant the supernatant. With a 10 ml serological pipet, decant the top 25 ml of the deep red supernatants with a 10 ml pipet.