PSL301H1 Lecture Notes - Lecture 12: Oncotic Pressure, Subclavian Vein, Extracellular Fluid
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PSL301H1 Full Course Notes
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Contrast capillary hydrostatic pressure (pc) and interstitial fluid pressure (pif) Contrast plasma (pi (p/c)) and intestinal colloid pressure (pi) Does hydrostatic pressure across a capillary change: 5x increase in cardiac output, 88% of blood redirected to skeletal muscles. 3 theories: sympathetic activity causes baroreceptors to think high pressures are normal, baroreceptor transmission is blocked during exercise, chemoreceptor signals outweigh baroreceptor signals. Metabolic activity of tissue: continuous tight junctions and use transcytosis for transporting materials, fenestrated large pores and leaky for high volume of materials (found in kidneys and intestines) Mass movement of fluid as a result of hydrostatic (blood pressure) or osmotic pressure gradient ([protein]) The first forces fluid outward of the capillaries and the former opposes filtration when value is positive think vectors. The first opposes filtration causing water to move inward and the second promoted filtration causes osmosis of fluid out of the capillaries. Yes goes down from arteriole to venule side.
