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14 Cards in this Set
- Front
- Back
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Water content of adult
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60% of body weight
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Water content of older adults
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45% of body weight
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Water content of infants
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70% of body weight
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Role of electrolytes
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-regulation of water distribution
-transmissions of nerve impulses -contraction of muscles -generation of ATP -regulation of acid/base balance -blood clotting |
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What is the primary IC cation
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K
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What is the primary EC cation
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Na
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What is the primary IC anion
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PO
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What is the primary EC anion
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Cl
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What is the normal osmilarity of body fluids
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275-295 mOsm/Kg
tight range |
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What are the major determinants of serum osmilality
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-Na
-glucose -urea |
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Change in plasma osmo
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-ADH levels change
-Renal conservation or excretion of water |
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What is the normal osmolality of urine
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-100-1300 mOsm/Kg
-large range -provides the ability to excrete or conserve large amounts of electrolytes |
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Colloidal oncotic pressure
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-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 |
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Hydrostatic pressure
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-blood pressure
-weight of blood fluids in the arteries -pushes fluid into the IC space |
