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8 Cards in this Set
- Front
- Back
Water is divided into 2 compartments known as:
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Extracellular Fluid- 15L
Intracellular Fluid- 25L, also includes interstitial space |
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4 important processes involved with fluid and electrolyte balance
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filtration, diffusion, osmosis, active transport
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Filtration
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movement of fluid through a cell or blood vessel membrane because of hydrostatic pressure
differences of both sides of the membrane. -limited to solvent -usually occurs from capillaries -occurs rapidly with steep gradients |
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Diffusion
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movement of particles (solute) across a permeable membrane down a concentration gradient (High to Low)
-not pressure dependent -maintains tissue nutrition -occurs rapidly with steep gradients -occurs in both directions |
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Brownian Motion
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kinetic energy of molecular movement
vibration of single molecules |
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Facilitated Diffusion
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diffusion that requires the assistance of transport system (i.e. insulin)
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Osmosis
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movement of water only (solvent)
occurs rapidly with steep gradients |
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Active Transport
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The movement of a substance across a selectively permeable membrane and against a concentrations, electrical, or pressure gradient
-requires energy -requires transport system (pump) -helps maintain special intercellular environment |