occurs when a patient donates his or her own blood for a transfusion
autologous transfusion
movement of ions or molecules across cell membranes, usually against a pressure gradient and with the use of expenditure of metabolic energy (ATP)
active transport
pressure exerted by plasma proteins on permeable membranes in the body; synomym for oncotic pressure
colloid osmotic pressure
tendency of solutes to move freely throughout a solvent from an area of higher concentration to an area of lower concentration until equilibrium is established
diffusion
passage of a fluid through a permeable membrane whose spaces do not allow certain solutes to pass; passage is from an area of higher pressure to one of lower pressure
filtration
force exerted by a fluid against the container wall
hydrostatic pressure
having a greater concentration than the solution with which it is being compared
hypertonic
having a lesser concentration than the solution with which it is being compared
hypotonic
having about the same concentration as the solution with which it is being compared
isotonic
passage of a solvent through a semipermeable membrane from an area of lesser concentration to an area of greater concentration until equilibrium is established
osmosis
concentration of particles in a solution, or a solution's pulling power
osmolarity
expression of hydrogen ion concentration and resulting acidity of a substance