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Tag Archives: Renal Blood Flow

[Physiology] Vascular Control in Specific Organs


In General Basal tone, local metabolic vasodilator factors, and sympathetic vasoconstrictor nerves acting through alpha1-receptors are the major factors controlling arteriolar tone and therefore the blood flow rate through peripheral organs. Sympathetic vasoconstrictor nerves, internal pressure, and external compressional forces are the most important influences on venous diameter and therefore on peripheral-central distribution of blood […]

The Autoregulation of Renal Blood Flow


Part I The capacity of tissues to regulate their own blood flow is referred to as autoregulation. Most vascular beds have an intrinsic capacity to compensate for moderate changes in perfusion pressure by changes in vascular resistance, so that blood flow remains relative constant. This capacity is well developed in the kidneys (see Part II), […]

Factors That Affect GFR


Glomerular filtration rate (GFR) is the amount of plasma ultrafiltrate formed each minute in both kidneys. For substances that are nontoxic and not metabolized by the body can be used to measure GFR. Renal plasma clearance of this substance can be the GFR. The renal plasma clearance is the volume of plasma from which a […]