Fluid, Electrolyte, and Acid-Base Balance Flashcards
water that contains dissolved or suspended substances such as glucose, mineral salts, and proteins
fluid
outside the cells
extracellular fluid
inside the cells
intracellular fluid
divisions of the ECF
intravascular fluid and interstitial fluid (major divisions) and transcellular fluid (minor division)
liquid portion of the blood
intravascular fluid
located between the cells and outside the blood vessels
interstitial fluid
secreted by the epithelial cells
transcellular fluid
compound that separates into ions when it dissolves in water
electrolytes
measure of the number of particles per kilogram of water
osmolality
fluid with the same concentration of non permeant particles as normal blood
isotonic
solution is more dilute than the blood
hypotonic
solution is more concentrated than normal blood
hypertonic
requires energy in the form of ATP to move electrolytes across cell membranes against the concentration gradient
active transport
passive movement of electrolytes or other particles down the concentration gradient
diffusion
a process by which water moves through a membrane that separates fluids with different particle concentrations
osmosis
movement across a membrane, under pressure, from higher to lower pressure
filtration
the force of the fluid pressing outward against a surface
hydrostatic pressure
an inward-pulling force caused by blood proteins that helps move fluid from the interstitial area back into capillaries
colloid osmotic pressure (oncotic pressure)
three processes of fluid homeostasis
fluid intake and absorption, fluid distribution, and fluid output
4 organs that fluid output occurs through
skin, lungs, GI tract, and kidneys