How Kidneys Influence Blood Pressure The blood pressure in your body depends upon the following conditions:
y y y
The force of contraction of the heart -- related to how much the heart muscle gets stretched by the incoming blood. The degree to which the arteries and arterioles constrict -- increases the resistance to blood flow, thus requiring a higher blood pressure. The circulating blood volume -- the higher the circulating blood volume, the more the heart muscle gets stretched by the incoming blood.
The kidney influences blood pressure by:
y y
Causing the arteries and veins to constrict
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