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Blood Capillary Venous Blood Hydrostatic Pressure = 30 mmHg H venous end Colloid Osmotic Pressure= 25 mmHg Arterial Blood Interstitial Fluid Decrease outflow Increase inflow In shock arterial end Fluid shift system
Renal compensatory mechanisms the juxtaglomerular apparatus renin, aldosterone angiotensin‖ the posterior pituitary: vasopressin Effects water retention vasoconstriction
Renal compensatory mechanisms • the juxtaglomerular apparatus： renin，aldosterone， angiotensin II • the posterior pituitary：vasopressin • Effects: water retention , vasoconstriction