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14 Cards in this Set

  • Front
  • Back
Water content of adult
60% of body weight
Water content of older adults
45% of body weight
Water content of infants
70% of body weight
Role of electrolytes
-regulation of water distribution
-transmissions of nerve impulses
-contraction of muscles
-generation of ATP
-regulation of acid/base balance
-blood clotting
What is the primary IC cation
K
What is the primary EC cation
Na
What is the primary IC anion
PO
What is the primary EC anion
Cl
What is the normal osmilarity of body fluids
275-295 mOsm/Kg
tight range
What are the major determinants of serum osmilality
-Na
-glucose
-urea
Change in plasma osmo
-ADH levels change
-Renal conservation or excretion of water
What is the normal osmolality of urine
-100-1300 mOsm/Kg
-large range
-provides the ability to excrete or conserve large amounts of electrolytes
Colloidal oncotic pressure
-related to protein (mainly albumin, but also BUN and glucose)
-pulls fluid into the IV space
-positively charged albumin is repelled from the negatively charged capillary walls
Hydrostatic pressure
-blood pressure
-weight of blood fluids in the arteries
-pushes fluid into the IC space