Explain the physiological concept of flow down gradients and
illustrate your understanding by presenting three examples...
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Medical Sciences
Explain the physiological concept of flow down gradients andillustrate your understanding by presenting three examples from atleast two different body systems. In your answer include thetermsgradient and resistance.
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Examples of flow down gradient Pressure gradient in the Cvs In order for blood to flow through a vessel or across a heart valve there must be a force propelling the blood This force is the difference in blood pressure ie pressure gradient across the vessel length or across the valve At any given pressure gradient the flow rate is determined by the resistance R to that flow The factors determining the resistance are described by the Poiseuille relationship The most important factor quantitatively and functionally is the radius of the vessel or in the case of a heart valve the orifice area of
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