Fluid balance Flashcards
ICF contains high?
K+ and Mg2
Define tonicity?
A measure of the effectiveosmotic pressuregradient, as defined by thewater potentialof twosolutionsseparated by asemipermeable membrane.
Define the mole?
an amount of substance that contains the number of molecules equal to Avogadro’s number (6 x 1023).
A solution with low osmolarity has?
fewer solute particles per liter of solution
A solution with high osmolarity has?
more solute particles per liter of solution.
When solutions of different osmolarities are separated by a membrane permeable to water, but not to solute, water will move from?
The side with lower osmolarity to the side with higher osmolarity.
Define osmole?
the osmole is a non-SI unit of measurement that defines the number of moles of solute that contribute to the osmotic pressure of a solution.
Osmolality is a property of?
a particular solution and is independent of any membrane
Tonicity is a property of?
a solution in reference to the membrane.
Oncotic Pressure or Colloid oncotic pressure is the?
Proportion of the total osmotic pressure in plasma exerted by colloids. COP is only about 0.5 - 4% of the total osmotic pressure.
Tonicity is also referred to as?
effective osmolality.
Fluids with osmolality > 300mOsm/kg are?
hypertonic to plasma.
Fluids with osmolality < 300mOsm/kg are?
hypotonic to plasma.
Fluids with osmolality = 300mOsm/kg are?
Isotonic to plasma.
How many osmoles in the following?
0.1 moles litre NaCL
0.2 osmoles
