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14 Cards in this Set
- Front
- Back
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Microcirculation in capillary bed for? |
- nutrient and waste exchange |
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Starling hypothesis |
Balance of forces at capillary walls determine the rate of fluid movement into interstitium |
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Preferential channels for... |
shunt flow |
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True capillaries for... |
nutritional flow |
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Continuous capillaries |
- junctions between cells - muscle, skin |
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Fenestrated capillaries |
- fenestrae between cells - endocrine, kidney |
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Discontinuous capillaries |
- gaps between cells - liver, spleen |
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3 forms of transcapillary exchange |
- diffusion - pinocytosis - bulk flow |
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Fick's law |
solute moved = Area*Conc.*diffusion coefficient |
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Outward forces on fluid at capillary wall |
Capillary Hydrostatic pressure from within Interstitial fluid colloid osmotic pressure |
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Inward forces on fluid at capillary wall |
Interstial fluid Hydrostatic presssure from outer Plasma colloid osmotic pressure |
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Colloid osmotic pressure affected by what? |
Protein conc. |
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Oedema is... |
localised systemic accumulation of interstitial fluid that is filtered but not reabsorbed |
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causes of oedema |
incr. venous pressure inflammation decr. blood protein conc. decr. lymphatic drainage |
