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15 Cards in this Set

  • Front
  • Back
where is the largest portion of water in the body?
intracellular fluid
What are some indicators used to measure total body water?
Antipyrine, D2O, HTO
What are some indicators used for measuring plasma water?
Evans Blue, I-Albumin
What are some indicators used for measuring extracellular water?
Radioactive Na, Cl, sulfate, thiocyanate, and thiosulfate; inulin, mannitol, sucrose
2.25g of indicator is injected, 0.25g of the indicator is excreted, and the plasma concentration of the indicator is 0.0476g/L. What is the Vdistribution and what is the indicator measuring?
42L; Total body water (Antipyrine, D2O, HTO)
What effect would diarrhea have on ECF volume, ICF volume, and osmolality?
decrease ECF volume, no effect on ICF volume or osmolality
What effect would SIADH have on ECF volume, ICF volume, and osmolality?
increase ECF volume and ICF volume, decrease osmolality
What effect would high Na+ intake have on ECF volume, ICF volume, and osmolality?
decrease ICF volume, increase ECF volume, increase osmolality
What effect would adrenal insufficiency have on ECF volume, ICF volume, and osmolality?
decrease ECF volume, increase ICF volume, decrease osmolality
What effect would isotonic infusion have on ECF volume, ICF volume, and osmolality?
increase EFC volume, no effect on ICF volume or osmolality
What effect would dehydration have on ECF volume, ICF volume, and osmolality?
decrease ICF and ECF volume, increase osmolality
What happens to plasma proteins during volume expansion?
decrease
What is the signal for Na+ hemostasis?
volume
If blood volume increases, what happens to RAAS, SNS, ADH, ANP?
RAAS down, SNS down, ADH down, ANP up
What are the responses of the osmoreceptors in the hypothalmus to increased osmolality
release of ADH, trigger thirst