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Go with the (blood) flow... today's Clinical Cut is all about blood pressure, flow, and resistance! Pressure is a force over an area, so with blood pressure, we’re measuring the force that the blood exerts on the surface area of the walls of the blood vessels. Differences in blood pressure throughout the body keep blood flowing from high-pressure areas, like the arteries, to low-pressure areas, like the veins. When we say “blood flow,” we’re referring to the volume of blood that flows through a

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