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17 Cards in this Set

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Solvent
water of fluid portion
solute
particles that are dissolved or suspended in water
filtration
fluid movement through a cell or blood vessel because of hydrostatic pressure differences
hydrostatic pressure
the force of the weight of water pressing against the confining walls of a space
(water-pushing pressure)
edema
-increased hydrostatic pressure
-decreased oncotic pressure
edema
-increased hydrostatic pressure
-decreased oncotic pressure
-increased Na intake
-right-sided heart failure
-dependent edema (gravity)
right-sided heart failure
-right ventricle too weak to pump blood to pulmonary vessels
-blood volume in the right side of heart increases
-blood backs up into the venous system
-hydrostatic pressure increases
-edema
brownian motion
-vibration of molecules caused by electrons orbiting at the core of each molecule
-causes random movement
-molecules collide or bump into each other
-speed increased with each collision
facilitated diffusion
-needs help to cross through a membrane
-EX: glucose cannot pass through the IV space to the IC space without insulin
diffusion
-movement of solute particles through a membrane
-occurs faster when concentration gradient is steeper
osmosis
-movement of water through a permeable membrane
-occurs when there is a membrane that separates 2 fluid compartments, atleast one of which contains a solute that cannot pass through the membrane
which would occur first, diffusion or osmosis?
diffusion
osmolarity/osmolality
total amount of solute particles, including electrolytes, present in a solution
blood and other body fluids' normal osmo level
-270-300 mOsm/L
-tight range
-body functions are best when body fluids are closer to 300
what IV solutions are isotonic
-lactated ringers
-0.9% NaCl
solubility
-the degree to which a solute dissolves in water
-greater the solubility the higher the osmotic pressure
what is the energy that is used for the Na/K pump?
-ATP
-energy comes from breaking of the high-energy bond which occurs when a phosphate group is split off from an adenosine triphosphate molecule