it is determined by particle number not the nature or weight of the solute.
osmolality
specimen for determination of osmolality
urine, serum
principle behind the determination of osmolality
increase in osmolality DECREASE VP and FP; INCREASE OP and BP
measured in ethanol poisoning
OSMOLAL GAP
Difference between the sums of the concentrations of the principal/unmeasured cations and of the principal/unmeasured anion
Anion Gap
Represents the unmeasured net negative charge on plasma proteins
Anion Gap
color of sodium
yellow
Most abundant cation in the ECF/ Chief base of the blood
sodium
water retention - Dilutional Hyponatremia
ADH
Increased Na reabsorption
aldosterone
Increased Na reabsorptionin the distal tubules
Atrial Natriuretic Factor
most common electrolyte disorder
hyponatremia
For every 100 mg/dL increase in glucose, serum sodium decreases by ____ mmol/L
1.6
Ions are heated sufficiently, electrons are excited to a higher energy state within an atom. When they return to the ground state, they emit light energy of the same wavelength
Flame Emission Photometry (FEP)
uses a semipermeable membrane to develop potential produced by having different ion concentration on either side of the membrane
Ion-selective electrodes
referred colorimetric method in Sodium
Albanese-lein method
Sodium + zinc uranyl acetate=
sodium uranyl acetate precipitate
Sodium uranyl acetate precipitate + water =
yellow solution
color developer in albanese-lein method
Polyvinyl Alcohol
Major intracellular cation
potassium
primarily controls the extracellular K+
Kidney
complete reabsorption of filtered K+
Proximal tubule
principal regulation of K+ excretion.
Distal tubule and CT
ACIDOSIS- ICF K+ moves out in exchange for ECF H+ resulting to________
hyperkalemia
ALKALOSIS- ECF K+ moves in exchange for ICF H+ resulting to ___________
hypokalemia
referred colorimetric method in potassium
lockhead and purcell
color of potassium
violet
Major extracellular anion, exist as NaCl or HCl
Chloride
Only known anion to serve as an enzyme activator (stimulating the starch hydrolysis reaction by the enzyme _____)