Blood_Pressure_Regulation_10

Blood_Pressure_Regulation_10 - Blood Pressure Regulation...

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Blood Pressure Regulation Neural Hormonal Maintain central blood volume & arterial pressure Ensure appropriate cardiac output Ensure adequate tissue perfusion
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Larger role in momentary regulation arterial pressure Hormonal Arginine vasopressin (ADH), angiotensin II, aldosterone, atrial natriuretic peptide Larger role in long term regulation arterial pressure
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P = TPR x CO
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Neural Sympathetic Heart: B1 adrenergic receptors  HR, conduction velocity, contractility Blood vessels 1 adrenergic receptors: norepinephrine vasoconstriction B2 adrenergic receptors: epinephrine (adrenal) Vasodilation (coronary & skeletal muscle arterioles)
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Sympathetic tone Maintains normal blood pressure Via excitatory signals from medulla oblongata Rostral ventrolateral nucleus
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Blood_Pressure_Regulation_10 - Blood Pressure Regulation...

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