Cell Volume Regulation Flashcards
Capillaries are impermeable to _____.
protein
What is deltaC in the Van’t Hoff equation?
difference in solute concentration across the membrane
NaCl crosses capillaries more easily than ____ does.
glucose
What is R in the Van’t Hoff equation?
the gas constant
Plasma contains more _____ than interstitial fluid does.
proteins
THO
water and tritiated water
tonicity
a measure of the osmotic pressure gradient of 2 solutions separated by a semipermeable membrane
What is the main protein in the blood and what it its concentration?
mostly albumin; 1 mM
What is sigma in the Van’t Hoff equation?
the reflection coefficient
What is the volume of the ECF?
14L exchangeable, 5L inexchangeable
What is T in the Van’t Hoff equation?
temp
What is the total body fluid volume?
42 liters
____ crosses capillaries more easily than glucose does.
NaCl
the reflection coefficient
a measure of how well the membrane ‘reflects’ the solute
What is one case where the osmotic gradient is not balanced osmotically?
proteins in the circulating blood
______ are impermeable to protein.
Capillaries
What is the range of values for the reflection coefficient?
range from 0 (THO) to 1 (nonpermeating solute)
_____ contains more protein than ______ does.
interstitial fluid
Van’t Hoff equation
pi = sigma RT delta C
pi = sigma RT delta C
Van’t Hoff equation
What is the volume of the ICF?
23L
